Fern Lake Rocky Mountain National Park

Explore Fern Lake on a Four Day Rocky Mountain Backpack Trip

Alright, folks, get your hiking boots ready and maybe even your fly rod if you are feeling fishy. We are about to talk about an adventure. A memorable, maybe a little muddy, definitely amazing, Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park.

Imagine this: starting bright-eyed at the Fern Lake Trailhead, you will be fishing, maybe swatting a few bugs, and definitely pretending you are a map expert. We are going from Fern Lake, enjoying two whole days of fishing and wandering around, then making our way to Odessa Lake for even more fish tales. After all that, we will amble back to where we started, feeling like true mountain adventurers, full of trail mix and stories.

This guide will help you plan your own incredible Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park. It is filled with tips and a bit of fun along the way, so it reads well, and hopefully, the trout will like your flies even more. Let us get to it.

Day 1: Fern Lake Trailhead to Fern Lake – The Adventure Starts

Getting to the Fern Lake Trailhead

Okay, picture this scene. You are standing at the Fern Lake Trailhead. It is just a bit west of the charming town of Estes Park, Colorado, right in magnificent Rocky Mountain National Park. Before starting any trip here, it is wise to check for information on any timed entry reservation system that might be in place for accessing the park, especially busy corridors like the Bear Lake Road.

Your backpack is probably stuffed a little too full; mine always is, especially with gear for several days of wilderness camping. You might have a fly rod looking all professional. Most importantly, you have your backcountry permit from the National Park Service; this is absolutely crucial for any overnight backpacking in this national park.

You absolutely need one of these for overnight camping in the park. You can look into getting your permits at nps.gov/romo; they go quickly, so plan well ahead. Some visitors choose to stay in a park hotel or one of the many Rocky Mountain National Park hotels in Estes Park the night before to get an early start.

The Fern Lake Trailhead sits at about 8,150 feet up, accessible from Moraine Park. The hike itself to Fern Lake is around 3.8 miles, a classic mountain national park experience. It is a moderate climb, gaining about 1,375 feet in height, making it a rewarding segment of your favorite hike list.

The path takes you through beautiful ponderosa pines and groves of aspen trees, especially vibrant in the fall. You might even have a moment or two questioning your life choices, especially if you packed too much beef jerky like someone I know. Ahem. This lake trail is well-maintained but expect some rocky sections.

The Hike: Effort, Views, and a Cheeky Squirrel

The trail starts pretty gently, which is a nice way to ease into your Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park. It follows along the scenic Big Thompson River, a delightful companion on your journey. Soon, you will pass Arch Rocks, which are giant boulders that look like nature decided to try its hand at modern art; it is pretty cool to see.

Keep an eye out for mule deer; they might give you a curious look as you pass through their rocky mountain national habitat. The air is crisp, and the sound of the river is a constant, soothing presence. This part of the Fern Lake Trail is popular with day hikers too, so expect to see a few friendly faces.

About 1.7 miles into your hike, you will reach The Pool. This is a really scenic spot where the river swirls around, almost like a lazy whirlpool, creating a picturesque scene. It is a great place for a quick snack break and to filter some water if needed, enjoying the tranquility of Rocky Mountain nature.

But do not get too comfortable because Fern Lake is waiting for you. Many consider this spot a highlight when exploring hiking trails in the area. After The Pool, the trail does get noticeably steeper. Your leg muscles might start a little rebellion, and you will feel the altitude a bit more.

But the views of the rugged peaks all around you and the thought of some good fly fishing at Fern Lake will keep you moving. I have a funny story here: a very bold squirrel, I swear, tried to make off with my granola bar. It was a standoff. Keep your snacks guarded, my friends, especially in Rocky Mountain National Park.

Arriving at Fern Lake: Setting Up Camp and Fishing Time

After about 3.8 miles of steady effort, you will finally arrive at the Fern Lake backcountry campsite. It sits at a cool 9,500 feet, a stunning location within Rocky Mountain National. Drop that heavy pack, find a good spot for your tent among the designated sites, and just take a minute. Admire the lake; it is often glassy and perfectly framed by spruce and fir trees, with Bearpaw Mountain looking grand in the background.

Setting up camp involves choosing a durable tent rated for mountain weather, as conditions can change rapidly. Ensure your sleeping bag has an appropriate temperature rating for the expected nighttime lows. Remember to store all food and scented items in your park-approved bear canister immediately, a critical step for safety in this national park.

Now, for what many of us came for: the fly fishing. Fern Lake is known as a great spot for fly fishing in Rocky Mountain National Park. It is stocked with lively brook trout. If you are lucky, you might even find a native cutthroat trout, a true prize for any angler exploring the lake trail system.

Try casting a dry fly – something like an elk hair caddis or a parachute Adams usually works well, especially during evening hatches. Watch as the trout rise; it is quite a sight. Be patient and observe the water for signs of feeding fish before making your first cast.

My very first cast? Well, it ended up tangled in a tree. It happens to the best of us, right? I ought to have been roll casting. A good tip: aim for the water, not the unsuspecting pine branches, particularly when surrounded by dense forest typical of mountain national landscapes.

Dinner will probably be one of those dehydrated meals, perhaps some chili mac if you are feeling fancy. You will fall asleep to the gentle sounds of the lake and maybe, if you listen closely, a distant elk bugling. Day one of your Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park, done.

Day 2: Fly Fishing and Exploring Around Fern Lake

Morning: Attempting Fly Fishing Glory

Wake up, sleepy campers. It is Day 2 at Fern Lake, and today is all about more fly fishing and exploring the area around this beautiful Fern Lake jewel. Get some instant coffee brewing; who needs a fancy coffee shop when you are at 9,500 feet with views like these in Rocky Mountain National Park? Then, it is time to hit the water again. Fern Lake’s clear, cold waters are ideal for brook trout, making it a key fishing destination along the Fern Lake Trail.

Early morning is usually when they are most active and hungry, especially before the sun hits the water directly. I decided to try a nymph rig this morning. Something like a pheasant tail or a copper John, dropped below a strike indicator, can be very effective when fish are not actively rising to the surface.

I managed to land a decent 10-inch brookie. It fought like it owed me rent. It is always a good idea to check the local fishing regulations at nps.gov/romo before you start your outdoor adventures. Using barbless hooks and practicing catch-and-release helps keep the fish population healthy for everyone enjoying this national park treasure.

Try casting near the inlet where Fern Creek flows into the lake; trout often hang out there because of the oxygen-rich water and food carried by the current. The clarity of the water in Fern Lake often allows for sight-fishing, adding another layer of excitement to the experience.

Remember, patience is a virtue in fly fishing. Sometimes they bite, sometimes they just laugh at your flies. It is all part of the fun when you are deep in the Rocky Mountain wilderness.

Afternoon: Wandering the Fern Lake Area

After a morning filled with fishing (hopefully successful), it is time to lace up those hiking boots again and do some exploring. You can wander along the edge of Fern Lake, a key feature of the lake trail system here. Take some photos of Notchtop Mountain; its jagged outline is quite impressive against the sky, a classic Rocky Mountain National Park vista.

Or, you could try your hand at finding the perfect skipping stone. My record is a sad four skips; I am sure you can beat that. Exploring the shoreline can reveal different angles of the lake and surrounding peaks, offering new perspectives on this mountain national park gem.

A really nice short side trip you can take is to Fern Falls. It is about half a mile back down the Fern Lake Trail, towards the Fern Lake Trailhead. The reward is a beautiful 60-foot waterfall that is perfect for photos and a refreshing mist on a warm day. Visiting Fern Falls adds another dimension to your Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park.

Just be careful on the rocks around the falls; they can be slicker than you think. I might have slipped and gotten a sock wet. I just laughed it off, because what else can you do? That is part of the Rocky Mountain experience when navigating various hiking trails.

Keep an eye out for wildlife as you explore. You might see marmots sunning themselves on the rocks or pikas gathering vegetation. Or, if you are really quiet and lucky (from a safe distance, of course), you might spot a black bear. This is why using bear canisters for all your food and scented items is so important throughout your stay in Rocky Mountain National Park.

Back at your campsite, maybe cook up some ramen for dinner – backpacking gourmet. Then just relax by Fern Lake as the sun sets behind the peaks, painting the sky with incredible colors. Day two of this Rocky Mountain National Park hotels alternative should be pure mountain happiness, a true escape from the everyday.

Day 3: The Trek to Odessa Lake – More Hiking, More Fishing Fun

Early Start: Packing Up and Moving On

Day three arrives crisp and cool, the air thin and invigorating at this altitude in Rocky Mountain National Park. This weather is just right for breaking camp at Fern Lake. Enjoy some oatmeal, maybe with a few berries if you packed them, providing fuel for the day’s journey along the lake trail to Odessa Lake.

Then, carefully stuff your pack again, ensuring weight is distributed evenly for comfort. Always do a final check to make sure you have left no trace of your visit. Pack out every single piece of trash, folks. We want to keep these places in Rocky Mountain National pristine for future generations and wildlife.

The hike from Fern Lake to Odessa Lake is about 1.9 miles. It is absolutely stunning, a highlight for many overnight backpacking trips in this part of the national park, but it has a bit of a challenge to it. There is about 400 feet of elevation gain fairly early on as you climb above Fern Lake.

After that, it is mostly a descent to Odessa Lake, which sits at around 10,000 feet, even higher than Fern Lake. The trail climbs up past Fern Lake, offering stunning retrospective views. You will get some teasing views of Little Matterhorn and Gabletop Mountain, iconic peaks of the Continental Divide region here in Rocky Mountain National Park.

These peaks are seriously impressive, showcasing the raw beauty of the mountain national landscape. I will admit, I tripped over a root on this section. I nearly did a full face-plant. I guess it was trail karma for laughing at my own soggy sock situation the day before.

The path winds through forests and then opens up to a truly breathtaking view of Odessa Lake. It is nestled below the rugged line of the Continental Divide. This is what Rocky Mountain National Park backpacking is all about – those moments of awe inspired by the grandeur of nature.

Arriving at Odessa Lake: Camp Setup and Fly Fishing Action

You will reach the Odessa Lake backcountry campsite after those 1.9 miles of what might have felt like “are we nearly there yet?” moments. Find a good spot within the designated camping area, set up your tent, and stash your gear securely. Then, just take a moment to soak in the view of Odessa Lake, another gem in Rocky Mountain National Park.

The turquoise waters of Odessa Lake are framed by peaks that soar to over 12,000 feet, including Flattop Mountain and Notchtop Mountain. It is incredible, and a very popular destination, sometimes accessed as a long day hike from Bear Lake Trailhead or Fern Lake Trailhead. For those staying overnight, it offers a more immersive wilderness camping experience.

Guess what time it is? That is right, fly fishing round two. Odessa Lake is a real gem, particularly known for its beautiful and often feisty cutthroat trout, a native species in this Rocky Mountain drainage. The shallower edges of the lake, especially near inlets or outlets, are often good spots for casting.

I decided to try a woolly bugger pattern – a black one, size 10, to imitate leeches or large nymphs. A nice cutthroat hit it so hard, you would think I had personally insulted its mother. The wind can sometimes pick up at Odessa Lake due to its high elevation and exposure, so you might need to keep your cast low and your patience levels high. Adapting your technique is part of the challenge and reward of high-altitude outdoor adventures.

Again, remember to check the fishing regulations for this area within Rocky Mountain National Park. Catch-and-release is vital for keeping this fishery healthy, particularly for native trout populations. Specific regulations might apply to Odessa Lake and other high-country lakes, so always verify on the nps.gov/romo website.

After you have (hopefully) landed a fish or three, take some time to explore the shoreline of Odessa Lake. Maybe try to dodge a muddy patch or two (I failed at this, oops). Soak in the alpine glow as the sun begins to set, casting long shadows and illuminating the peaks. Dinner is another delicious dehydrated meal, and you will probably fall asleep dreaming of feisty trout and pure mountain national park magic.

Day 4: Breakfast, Packing Up, and the Journey Back to Fern Lake Trailhead

Morning: Cooking Breakfast Like a Trail Pro

It is Day 4, the final day of your Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park, and the Fern Lake Trailhead is calling our names. Time to get up early. The alpine air is usually at its freshest in the morning, and you might catch some wildlife activity around Odessa Lake.

Fire up that trusty camping stove. Hopefully, you remembered to pack enough fuel. Whip up a breakfast fit for a backpacking champion. For me, that is usually instant oatmeal with a handful of trail mix tossed in. It adds that extra “I am a gourmet backpacker” touch, you know?

I managed to burn my tongue on my coffee this morning. Classic. I just laughed through the slight pain; it is all part of the adventure and learning experience in the Rocky Mountain backcountry. Take some time to sip your coffee and soak in the last views of Odessa Lake. If you are lucky, you might see mist rising off the water, or perhaps even a moose munching on willows in the distance, a common sight in Rocky Mountain National Park.

Remember to admire wildlife from a safe and respectful distance; never approach or feed animals. This ensures their safety and yours. Time to break camp and pack up your wilderness camping gear carefully.

Do one last sweep of your campsite to make sure you are leaving no trace, a core principle for all visitors to national parks. By now, you are practically a pro at this, right? Rocky Mountain National Park truly deserves all our love and care, from Fern Lake to Sky Pond and beyond. That’s another story, Sky Pond is absolutely incredible, GO!

The Hike Back: Descending to Reality and Reflection on a Grand Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park

The trek back to the Fern Lake Trailhead from Odessa Lake is roughly 5.7 miles. The good news is that it is mostly downhill. You will be retracing your steps, passing by Fern Lake again, and then heading down towards The Pool and the final stretch to the Fern Lake Trailhead.

Gravity becomes your friend on this leg of the journey. But your knees might start to grumble a bit; mine certainly did, quite loudly. Using trekking poles can be very helpful on descents to reduce impact on your joints. This part of the Fern Lake trail offers a different perspective as you travel in the opposite direction.

The trail will feel familiar now. Fern Lake will sparkle as you walk by, a fond memory from earlier in your trip. Fern Falls will roar a friendly goodbye, its mist a welcome coolness. And those Arch Rocks? They will still look just as artsy, marking your progress back towards civilization.

I am almost certain that same cheeky squirrel from Day 1 was there to taunt me again. He is probably still hoarding my granola bar somewhere near the lake trailhead. As you get lower, you will likely start seeing more day hikers, perhaps some heading towards Cub Lake or just enjoying a shorter walk from Moraine Park.

This trail is popular for good reason, offering accessible beauty within Rocky Mountain National Park. Just smile through the sweat; you are almost there. Reflect on the past few days: the challenges, the beauty, the solitude, and the fish stories you now have.

You will probably hit the trailhead around midday. That is after about 5.7 miles and a descent of roughly 1,775 feet from Odessa Lake. Give your hiking buddies a high-five. You have just successfully completed an amazing Rocky Mountain National Park backpacking trip, one of many potential mile hikes that etch themselves into your memory. What an accomplishment for your outdoor adventures log.

Trip Planning Tips: Your Rocky Mountain National Park Backpacking Checklist

Thinking about doing this Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park yourself? That is great. A little preparation goes a long way in ensuring a safe and enjoyable experience in this stunning mountain national park.

Permits and Essential Preparations

First things first: backcountry permits. You absolutely need a permit for any overnight backpacking or wilderness camping stays in the wilderness areas of Rocky Mountain National Park. You can book these through the official National Park Service website, recreation.gov, typically starting in early March for the summer season. It’s critical to also check if a timed entry permit is required for vehicle access to the park during your visit dates, as this is separate from your backcountry permit.

Be warned, these permits are very popular and can fill up incredibly fast, especially for weekends and popular areas like Fern Lake and Odessa Lake. Plan well in advance. If your favorite hike destination is booked, consider alternative backcountry sites or mid-week trips. Information about permit availability and procedures is detailed on the Rocky Mountain National Park website (nps.gov/romo).

Let us talk gear. You will need a sturdy backpack (60-70 liters is common for multi-day trips), a good quality tent suitable for mountain weather (3-season is usually adequate, but check forecasts), and a warm sleeping bag (rated to at least 15-20°F, as nights can be cold even in summer). Since we are talking fly fishing, bring your fly rod (a 3-5 weight, 7-9 foot rod is versatile), reel, and a selection of flies appropriate for Rocky Mountain trout.

Good choices often include elk hair caddis, parachute Adams, blue-winged olives for dry flies; pheasant tail nymphs, hare’s ear nymphs, and copper Johns for subsurface; and woolly buggers or small streamers. You will also need a camping stove, fuel, a reliable water filter or purification method (streams are plentiful but require treatment), a map and compass (and know how to use them.), and a well-stocked first-aid kit. A GPS device or smartphone app with downloaded maps can be a helpful backup. Oh, and a park-approved bear canister is mandatory for food storage to keep both you and the bears safe in this national park.

Clothing is all about layers in the mountains. Temperatures can swing wildly, from warm and sunny during the day to quite chilly at night, even in summer. Pack moisture-wicking base layers, an insulating mid-layer (fleece or down jacket), and a waterproof, windproof outer shell (rain jacket and rain pants). Always pack a good rain jacket and rain pants; afternoon thunderstorms are common in the Rockies. I have learned the hard way about getting caught in the rain without proper gear.

For food, lightweight dehydrated meals are your friend for dinners. Lunches can be wraps, jerky, cheese, and nuts. Breakfasts like oatmeal or granola bars are easy. Also, pack plenty of high-energy snacks like trail mix, energy bars, and jerky. And remember, pack out all your trash. Every single bit. Consider bringing a small trowel for digging catholes for human waste, at least 200 feet from water sources and trails.

The best season for this trip is generally from late spring to early fall, typically June through September. Snow can linger in the higher elevations, like around Odessa Lake or on trails leading towards the Continental Divide, well into early summer. You might encounter muddy trails late in theseason or after heavy rains. Always check trail conditions and road conditions, especially for access roads like Fall River Road or Trail Ridge Road if you plan to incorporate scenic drives into your Rocky Mountain National visit, before you go. Information is available at visitor centers and on the park’s website.

If you’re planning your trip from afar, looking into restaurants flights vacation rentals in Estes Park can make your pre- and post-trip logistics smoother. Many vacation rentals offer convenient access to the park entrances. You might also find rental cars essential for exploring the wider Rocky Mountain National Park area, though shuttle buses operate within certain park sections like the Bear Lake Road corridor, with the Bear Lake shuttle being particularly popular.

Fly Fishing 101 for Fern and Odessa Lakes

If fly fishing is high on your list for this trip to Fern Lake and Odessa Lake, you are in for a treat. Both lakes offer some wonderful opportunities to connect with the aquatic life of Rocky Mountain National Park. For flies, having a variety is a good idea, as insect hatches can be unpredictable in alpine environments.

Dry flies like parachute Adams, various caddis imitations (elk hair caddis, Goddard caddis), and terrestrial patterns (ants, beetles, grasshoppers in late summer) work well when fish are visibly rising. Nymphs such as pheasant tails, hare’s ears, copper Johns, zebra midges, or San Juan worms can be effective when fished subsurface, either under an indicator or with a Euro-nymphing setup. And do not forget some streamers, like the classic woolly bugger (olive, black, brown), sculpin patterns, or small Clouser minnows, which can entice larger, more aggressive trout, especially brook trout in Fern Lake or cutthroat trout in Odessa Lake.

A 4 or 5-weight fly rod, around 8.5 to 9 feet long, is a good all-around choice for these lakes. A floating line will cover most situations. Leaders should be 7.5 to 9 feet long, tapering to a 4X, 5X, or even 6X tippet, depending on water clarity and the size of your flies. Fluorocarbon tippet can be beneficial for subsurface presentations due to its lower visibility and abrasion resistance.

It is very important to know the fishing regulations. In Rocky Mountain National Park, this usually means using artificial flies and lures only, and barbless hooks are strongly encouraged, if not required, for certain waters. Practicing catch-and-release is mandatory for most trout species, especially native cutthroats. Always check the most current regulations on the NPS fishing page or at a visitor center before you wet a line. Specific rules may apply to different lakes and streams within the national park.

Good fishing spots at both lakes often include the areas around inlets where fresh water and food sources flow in. The edges of the lakes, especially near drop-offs, submerged boulders, or weed beds, can also hold fish. Be observant, watch for rising fish or cruising fish in the shallows, and enjoy the process. Early morning and late evening are typically the most productive times, but fish can be caught throughout the day, especially on overcast days or when hatches occur.

Safety and Practicing Leave No Trace

Safety should always be your top priority in the backcountry of Rocky Mountain National Park. Be aware of wildlife. Store all your food, trash, and any scented items (toothpaste, sunscreen, etc.) in a park-approved bear canister at all times when not actively in use. Keep your canister at least 100 feet from your tent. Keep a safe and respectful distance from all animals, including bears, moose (which can be aggressive), elk, and smaller critters like marmots and pikas. Do not feed the wildlife, no matter how cute they look; it harms them and can create dangerous situations.

The weather in the mountains can change very quickly. Afternoon thunderstorms, often with lightning, are common, especially in the summer months from July through August. It is wise to start your hiking days early and aim to be off high-elevation, exposed areas like ridges or open sections of the lake trail near Odessa Lake by early afternoon to avoid being caught out in a storm. Always carry rain gear, even if the forecast looks clear. Hypothermia is a risk even in summer if you get wet and cold. Dress in layers and have warm, dry clothing available.

Altitude sickness can affect anyone, regardless of fitness level, especially when ascending to elevations like those at Fern Lake (9,500 ft) and Odessa Lake (10,000 ft). Symptoms include headache, nausea, fatigue, and dizziness. Ascend gradually if possible, stay well-hydrated, avoid alcohol and caffeine, and descend if symptoms worsen. Know how to treat blisters and other common hiking ailments by carrying a good first-aid kit.

Water sources are generally plentiful along the Fern Lake Trail, but all water must be treated before drinking. Use a reliable water filter, purification tablets, or boil water for at least one minute. Let someone know your detailed hiking plans, including your route, campsites, and when you expect to be back. Cell service is unreliable or non-existent in most backcountry areas of Rocky Mountain National Park.

Finally, please practice Leave No Trace principles rigorously during your Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park. These seven principles are the cornerstone of responsible outdoor recreation:

Plan Ahead and Prepare: Know regulations, expect weather, pack appropriately.
Travel and Camp on Durable Surfaces: Stick to established hiking trails and campsites. Avoid trampling vegetation. Camp at least 200 feet from lakes and streams.
Dispose of Waste Properly: Pack it in, pack it out. This includes all trash, food scraps, and toilet paper. Dig catholes 6-8 inches deep for human waste, at least 200 feet from water, trails, and camps.
Leave What You Find: Preserve the past; examine, but do not touch, cultural or historic site artifacts. Leave rocks, plants, and other natural objects as you find them.
Minimize Campfire Impacts: Campfires are often prohibited in RMNP backcountry. Use a lightweight stove for cooking. If fires are permitted, keep them small and use existing fire rings.
Respect Wildlife: Observe wildlife from a distance. Never feed animals. Store food and trash securely. Control pets (though pets are generally not allowed on Rocky Mountain National Park trails).
Be Considerate of Other Visitors: Respect other visitors and protect the quality of their experience. Travel and camp quietly.

These simple actions help protect these beautiful wild places within our national parks for future generations to enjoy their own outdoor adventures.

Why This Rocky Mountain National Park Backpacking Trip Is Fantastic

This 4-day adventure from Fern Lake Trailhead to Fern Lake and then over to Odessa Lake truly is a highlight of Rocky Mountain National Park backpacking. You get the chance to fly fish for beautiful brook trout and feisty cutthroat trout in pristine alpine waters. You get to explore stunning alpine lakes like Fern Lake and Odessa Lake, and soak in incredible mountain scenery, including views towards the Continental Divide and peaks like Longs Peak in the distance on clearer days from certain vantage points.

And yes, you will probably have a few laughs at your own trail blunders (or mine – those soggy socks will haunt me.). Starting from the Fern Lake Trailhead, accessible from Moraine Park, means you get moderate hiking distances with rewarding views pretty quickly. It is a wonderful way to unplug from the digital world and plug directly into the beauty of nature, far from the crowds sometimes found at easily accessible spots like Bear Lake or Alberta Falls (though those are beautiful too.). While this route doesn’t directly traverse Trail Ridge Road or Fall River Road, the general grandeur of the park these famous scenic drives showcase is echoed in the backcountry.

The total round trip distance for this itinerary is about 11.4 miles. There are enough elevation gains and drops to keep things interesting and make you feel like you have earned those views. Whether you are fairly new to overnight backpacking or an experienced mountain trekker seeking a favorite hike, this trip offers a fantastic experience. It is a chance for genuine wilderness camping and to test your outdoor skills in a managed but wild setting. It’s a step beyond a simple day hike to Sky Pond or a visit to Glacier Basin campground, offering deeper immersion. While horseback riding is popular in some areas of Rocky Mountain, this trip is purely on foot.

Frequently Asked Questions

Here are some frequently asked questions about planning a trip like this to Rocky Mountain National Park:

What is the best time of year for this backpacking trip?
Late June through mid-September generally offers the best conditions. Snow can linger into July at higher elevations like Odessa Lake. August can bring afternoon thunderstorms. Fall (mid-September) offers beautiful colors but cooler temperatures.
How difficult is this trail?
The hike to Fern Lake is considered moderate. The section from Fern Lake to Odessa Lake involves more elevation gain and can be challenging. Overall, it requires good physical fitness and acclimatization to altitude.
Are bear canisters really required?
Yes, hard-sided, park-approved bear canisters are mandatory for all food, scented items, and trash in the backcountry of Rocky Mountain National Park. This is for your safety and the protection of bears.
Is cell service available on the trail?
Do not expect reliable cell service. You might find intermittent signals at higher, exposed points, but for the most part, you will be disconnected. Carry a map and compass, and consider a satellite messenger for emergencies.
What about water sources?
Water is generally available from Fern Creek, the Big Thompson River, Fern Lake, and Odessa Lake. All water must be treated by filtering, boiling, or chemical purification before drinking.
Can I have a campfire?
Campfires are prohibited at Fern Lake and Odessa Lake backcountry campsites, and most other backcountry sites in Rocky Mountain National Park. Always use a backpacking stove for cooking.
Are dogs allowed on the Fern Lake Trail?
No, pets are not permitted on any trails or in the backcountry of Rocky Mountain National Park, with the exception of parking lots, campgrounds, and along established roads.
How far in advance should I book my backcountry permit?
Permits for popular routes like the Fern Lake trail can fill up extremely quickly, often on the day they become available (usually early March). Plan to book as soon as the reservation window opens. Some walk-up permits may be available, but it is risky to rely on this for a Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park.
What if I can’t get a permit for Fern Lake or Odessa Lake?
Explore other backcountry campsite options in Rocky Mountain National Park. The park has numerous hiking trails and wilderness camping opportunities. Consult the park’s backcountry map and be flexible with your plans.

Conclusion of Fern Lake Rocky Mountain National Park

So there you have it, intrepid trail warriors. A glimpse into a wonderful Four Day Backpacking Trip to Fern Lake Rocky Mountain National Park. It covers the journey from Fern Lake Trailhead to Fern Lake, with plenty of time for fly fishing and exploring. Then, it includes a beautiful jaunt over to Odessa Lake for more casting and wandering within the stunning mountain national landscape.

And finally, a triumphant return, filled with memories from one of the park’s classic mile hikes. You will surely laugh at tangled fishing lines. You will cheer for every trout you catch (or even just see.). And you might even develop a healthy suspicion of overly friendly squirrels near Arch Rocks or any lake trail.

Pack your gear thoughtfully, check the road conditions before you head to Estes Park or the Fern Lake Trailhead, fish with enthusiasm, and always practice Leave No Trace. Your own unforgettable Rocky Mountain adventure, perhaps your new favorite hike, is out there waiting for you. Get on the trail, explore the vastness of Rocky Mountain National Park, and enjoy your outdoor adventures. I would love to hear your own funny stories and trail tales in the comments when you get back from your overnight backpacking experience. Happy hiking and tight lines, everyone.