Lost Man Lake Colorado Fly Fishing
It’s September in Colorado as fall approaches. I hiked this same trail into Independence Lake a year ago to catch some brook trout on a fly. Trailhead is just below Independence Pass at 11,500 feet in elevation.
Hunter FryingPan Wilderness area is the headwaters for the Fryingpan River and Hunter Creek, this area has numerous lakes and stream with good trout populations. The wilderness area is 82,026 acres with 65 miles of hiking trails and 11 trailheads. Looking for some tranquility and starlite nights, this is the place.
Table of Contents
-
- Morning Alpenglow of Independence Pass, Colorado
-
- Alpenglow gains in intensity
-
- Alpenglow is now beginning to fade as the sun rises higher in the sky and the moon sets, Time to head down to Lost Man Lake Colorado Trailhead
-
- Starting up Lost Man Trail, it lead to the headwaters of the Frying Pan River, Independence Lake and our destination today of Lost Man Lake in the Hunter Frying Pan Wilderness Area
-
- Looking back down at the parking area, an outfitter is unloading horses and heading into camp. It's opening weekend of Archery season.
-
- In mid July the alpine valley would be carpeted with a variety of wildflowers. It's still a very beautiful hike.
-
- It's a little chilly with some ice in places this morning, as I wait for the sun to come over the divide and warm the bones
-
- Creek from Linkins Lake flowing down to meet the Frying Pan River
-
- Here comes the sun and I say all right
-
- Looking back across the highway into the Collegiate Peaks Wilderness and up to Independence Pass Colorado
-
- Remnants of a few wildflowers still left in the protection of the streams growth from the frost
-
- Crossed creek heading in the Hunter Fryingpan wilderness in a few more steps
-
- Up Lost Man Trail hoping to sun reaches the valley floor soon, there is ice along the stream and its a bit chilly this morning
-
- Wilderness Sign, a Great Alpine Tundra Hike with great Colorado Fly Fishing along the way
-
- RX Bars are my personal favorite energy snack on trail
-
- Still quite green, if you are looking for a great wildflower hike this is it in mid July
-
- Collegiate Peaks Wilderness Area to the rear
-
- Hoping the sun gets here soon
-
- About to cross the Fryingpan River
-
- It good that I can step over it, it's a bit chilly this morning
-
- Once on the other side the trail follows the Fryingpan River up to Independence Lake
-
- Fryingpan has carved a small gorge through the rock on its way down
-
- I am looking down into the mini gorge of the Frying pan River below Independence Lake hiking to Lost Man Lake for some Colorado Fly Fishing for Cutthroat with Get Lost in America | Saltwater on the fly
-
- Meadow above the gorge blanketed in shades of green with blue waters flowing through it
-
- Another closer look into the canyon and the river below
-
- Looking down the mountain through the gorge
-
- Lights shadows over an alpine valley as it embraces rays of dawn as the chill of the night slides away over the terrain with suns approach
-
- Narrow valley turn looking backdown where I have hiked through
-
- Up the trail to the bench where Independence lake lies talking with the morning breeze
-
- I find trails no matter where they are picturesque like humanity
-
- Down and across is Colligate Peaks Wilderness Area, with several very rugged 14ers, but not the toughest of them. This wilderness area and the Weminuche Wilderness Area are two of my Colorado favorites
-
- Fryingpan River can be crossed in two steps, up here below Independence Lake, there bits of ice on rocks and back eddies
-
- Ridge below the lake
-
- Closer look at the ice layering the creek
-
- Looking at how the trail winds from here up to the lake, its a gentle climb as it opens to the lakes
-
- First glimpse of Independence Lake
-
- Independence Lake with a beautiful glacier silt glow in the morning sun hiking
Independence Lake to Lost Man Lake Colorado
From Independence Lake at 12,500 feet in elevation, I hike up over Lost Man Pass at 12,815 feet in elevation down to Lost Man Lake for a little Colorado fly fishing for Cutthroat.
From Lost Man Lake is a beautiful remote location and can be reached from trailhead down Hwy. 82 as a 9.5 mile loop hike. Trail comes down past Lost Man Reservoir to Lost Man Campground. If you decide to do the loop get a ride to the upper trailhead, it’s an easier hike, starting at Lost Man Campground is a tough up the mountain hike. I recommend spending a night or two at Lost Man Lake. The night sky is incredible.
Lost Man Lake is 0.23 miles in length and 0.13 miles in width making it 13.6 acres with a depth of 53 feet. Lost Man is a great Cutthroat Trout fishery. Fly fishing I use chironomids, pheasant tails on a very slow retrieve and streamers such as small black wooly buggers in size 8’s and 10’s.
-
- Leaving Independence Lake to hike up over Lost Man Pass, a couple of hikers coming up behind me
-
- Just starting my climb to Lost Man Pass, Colorado
-
- View of Independence Lake as I climb to lost man pass
-
- A Spring as we climb to the pass
-
- Looking back at Independence Lake one last time
-
- Looking back down the Alpine Valley and Collegiate Peaks wilderness peaks in the distance
-
- Up to Lost Man Pass
-
- First view of Lost Man Lake from the pass
-
- Independence Lake from Lost Man Pass while fly fishing Colorado with Get Lost in America | Saltwater on the Fly
-
- Down the Pass to Lost Man Lake, a ruggedly beautiful Alpine region in the Hunter Fryingpan Wilderness Area with Get Lost in America | Saltwater on the Fly
-
- Close up of Lost Man Lake as I descend the pass
-
- Topography of the descent are varied with rock gardens to alpine grasses the closer to the Lost Man Lake I go
-
- Looking Back up at the Rocky section of the trail
Lost Man Lake Colorado: Epic Hiking and Fly Fishing Adventures in July and Mid-September
Nestled high in the Hunter-Fryingpan Wilderness area of the White River National Forest, near Aspen, Colorado, Lost Man Lake stands as one of the most rewarding alpine destinations for hikers and fly anglers alike. This stunning high-elevation lake sits at approximately 12,000-12,800 feet, surrounded by dramatic peaks, wildflower meadows in summer, and golden aspens in fall. The trail to Lost Man Lake offers breathtaking views of Independence Pass, rugged terrain, and crystal-clear waters teeming with trout—making it a prime spot for combining hiking and fly fishing in Colorado’s Rocky Mountains.
The primary access is via the Lost Man Trail (also known as part of the Lost Man Loop), which starts from trailheads along Highway 82 (Independence Pass Road). This area is accessible seasonally, typically from late June through early October, depending on snowpack. Independence Pass itself often closes in winter, so plan accordingly. No special permits are required for day hikes or fishing (standard Colorado fishing license needed), but wilderness regulations apply: pack out what you pack in, follow Leave No Trace principles, and note that campfires may be restricted.
The hike to Lost Man Lake is moderate to strenuous, with options for shorter out-and-backs or longer point-to-point routes. From the upper trailhead near Independence Pass (around 11,520 feet), the most direct path to the lake is about 4-5 miles round trip with 1,000-1,400 feet of elevation gain, depending on exact route variations. Longer loops incorporating nearby lakes like Independence Lake can extend to 8-9 miles with more gain. The trail winds through alpine tundra, past streams, and over passes with panoramic vistas of Geissler Mountain and surrounding peaks.
Why Lost Man Lake is a Must-Visit for Hikers and Fly Anglers
Lost Man Lake offers solitude, stunning scenery, and excellent fly fishing for species like brook trout, cutthroat trout (including Rio Grande cutthroat in some reports), and possibly rainbows or hybrids. The lake’s remote feel, despite proximity to Aspen, makes it ideal for those seeking a true mountain escape. In July, expect vibrant wildflowers and active insects; by mid-September, fall colors dominate, crowds thin, and trout become more aggressive.
This article draws from two personal trips: one in mid-July during peak summer and another in mid-September as autumn sets in. Both experiences highlight why Lost Man Lake excels for hiking combined with fly fishing.
Preparing for Your Lost Man Lake Adventure
Before heading out, check road conditions on Independence Pass—it’s a winding, high-altitude drive. The trailhead parking is limited, so arrive early. Pack layers for variable weather: July can bring warm days and afternoon thunderstorms, while September offers crisp mornings and potential early snow. A Colorado fishing license is mandatory, and barbless hooks are often recommended in wilderness areas.
Gear essentials include:
- Sturdy hiking boots for rocky sections
- Trekking poles for stability
- Bear spray (grizzlies are rare, but black bears possible)
- Fly rod (4-6 weight ideal), floating line, dry flies, nymphs, and streamers
- Bear canister if overnighting
- Plenty of water and sun protection at altitude
The area falls in the Hunter-Fryingpan Wilderness, so no motorized vehicles or bikes on trails.
Trip 1: Mid-July – Peak Summer Hiking and Fly Fishing Bliss
In mid-July, the drive over Independence Pass revealed snow-capped peaks contrasting with green valleys. Parking at the upper trailhead (near the Lost Man Campground area), I started early to beat the heat and potential storms. The trail begins above treeline, immediately immersing you in alpine scenery.
The path climbs steadily through meadows bursting with Indian paintbrush, columbine, and alpine sunflowers. Wildflowers carpeted the ground, creating a rainbow of colors against granite boulders. The air was crisp at 11,500+ feet, with occasional pika calls echoing from rock piles.
After about 2 miles of gradual ascent, the trail opens to views of the basin holding Lost Man Lake. The lake itself is a turquoise gem nestled in a cirque, fed by snowmelt streams. Round-trip distance was roughly 4.6-5 miles with 1,200-1,400 feet gain—moderate but demanding due to thin air.
Upon reaching the lake around noon, the water was calm, reflecting surrounding peaks. Fly fishing in July proved fantastic. Trout rose to dry flies during the afternoon hatch. I used a 5-weight rod with a 9-foot leader, starting with attractor patterns like Parachute Adams (#12-16) and elk hair caddis. Surface action picked up as terrestrials (ants, hoppers) fell into the water.
Casting from the rocky shoreline, I targeted rising fish near drop-offs. Brook trout dominated, with colorful fins flashing as they hammered dries. A few larger cutthroats appeared in shallows, willing to take nymphs (prince nymph or hare’s ear #14-18) under an indicator. The water was cold from recent melt, so fish held in deeper sections midday but cruised shallows mornings/evenings.
Challenges included wind picking up by afternoon, requiring longer casts and weighted flies. Thunder rumbled distant, prompting a quick pack-up. But the fishing was productive—dozens of eager trout, mostly 10-14 inches, with a few pushing 16. The solitude was profound; only a handful of other hikers passed by.
July highlights: Abundant wildflowers, reliable dry fly action, and warm enough for comfortable wading (though chilly!). This trip showcased Lost Man Lake as a premier high alpine fly fishing spot in summer Colorado.
Trip 2: Mid-September – Fall Colors, Aggressive Trout, and Serene Hiking
Returning in mid-September, the landscape transformed. Aspens glowed gold along lower elevations, and higher up, tundra grasses turned russet. Fewer tourists meant easier parking and quieter trails. Starting from a similar upper trailhead, the hike felt invigorating with cooler temps (40s mornings, 60s afternoons).
The trail was drier, with less mud from summer rains. Wildflowers faded, replaced by brilliant fall foliage and berry bushes. Mountain goats were spotted on distant ridges, adding wildlife excitement.
Reaching Lost Man Lake, the water appeared even clearer, with autumn light casting golden hues. The shorter days meant earlier sunsets, but fishing windows extended into afternoons.
Fly fishing in mid-September shifted dramatically. Trout fed aggressively pre-winter, chasing streamers and larger dries. I switched to a 5-weight with sink-tip line for stripping woolly buggers and sculpin patterns. Browns (if present) and brookies responded to aggressive retrieves.
Dry fly action included blue-winged olives (#18-22) during midday hatches and terrestrials early. Trout cruised more boldly, often in groups. Sight-fishing was excellent in clear water—spot fish, cast ahead, and watch takes.
Compared to July, September offered bigger fish potential as they bulked up. Fewer rising fish but more willing to streamers. Cooler water temps kept fish active longer. Wind was calmer, aiding precise casts.
The hike back under golden aspens felt magical, with elk bugles echoing in valleys below. Fewer people meant uninterrupted peace—ideal for reflection after landing several feisty trout.
September advantages: Stunning fall scenery, aggressive trout, thinner crowds, and comfortable hiking without summer heat.
Comparing July vs. Mid-September at Lost Man Lake
- Scenery: July bursts with wildflowers; September dazzles with fall colors.
- Weather: July warmer with storm risks; September cooler, more stable.
- Fishing: July excels in dry fly hatches and surface action; September favors streamers and technical nymphing for bigger, hungrier trout.
- Crowds: Both low compared to lower-elevation spots, but September even quieter post-Labor Day.
- Trail Conditions: July may have lingering snow or mud; September drier and crisp.
Both seasons deliver exceptional hiking and fly fishing, but September edges out for solitude and aggressive bites.
Tips for Fly Fishing Success at Lost Man Lake
- Best Flies: Dries (Adams, elk hair caddis, ants); nymphs (hares ear, prince); streamers (woolly bugger, sculpin) for fall.
- Techniques: Dry/dropper rigs in summer; strip streamers in fall. Fish early/late for best action.
- Ethics: Practice catch-and-release to preserve fragile alpine fisheries.
- Safety: Acclimate to altitude; monitor weather; carry emergency gear.
Reason Lost Man Lake Ought To Be on Your Colorado Bucket List
Whether chasing summer hatches or fall trophies, Lost Man Lake combines challenging hikes with world-class fly fishing in one of Colorado’s most scenic wilderness areas. The short-to-moderate access from Independence Pass makes it achievable for fit day-trippers, yet remote enough for adventure.
From vibrant July meadows to golden September shores, this spot captures the essence of Rocky Mountain angling. Pack your rod, lace your boots, and experience the magic of Lost Man Lake—where every cast feels like discovering something truly lost… and found.
