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A relatively approachable alpine run with easy access.


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Map Key

4.4

Miles

7.1

KM

85%

Runnable

9,834' 2,997 m

High

8,988' 2,740 m

Low

860' 262 m

Up

860' 262 m

Down

7%

Avg Grade (4°)

23%

Max Grade (13°)

Dogs Leashed

Features Lake · Swimming · Views · Wildflowers

Overview

Exceptionally popular, and for good reason. This is one of the easier ways to enjoy a high alpine lake, beautiful forest, and good sense of the Indian Peaks Wilderness. It's popular, so expect company.

Need to Know

Trailhead parking is extremely limited, and there are no good alternatives when it's full. Take the free shuttle from the Nederland High School. Use this parking symbol to navigate to the Park and Ride



(the shuttle parking location has changed from the RTD PnR to the Ned HS. Please update the parking symbol as well.

Runner Notes

Excellent altitude training without the dangers (lightning, ankle-twisting scree) found on the higher alpine trails nearby.

Description

From the trailhead, cross the footbridge and take the Devil's Thumb Trail #902, which climbs steeply for about 0.5-miles on an old road. The shorter Devils Thumb Bypass turns right (north) in 0.8 miles, but stick left and you'll soon come to the Lost Lake Trail.

Beautiful forested trail continues and you'll quickly get to the lake. There are 9 campsites available (first come, first served, and popular). It's cold, but people have been known to take a dip. Fishing is also popular.

Enjoy the views, circle around the lake, and meander back down!

Contacts

Shared By:

Nick Wilder with improvements by Alex HW

Trail Ratings

  4.3 from 82 votes

#91

Overall
  4.3 from 82 votes
5 Star
40%
4 Star
48%
3 Star
10%
2 Star
2%
1 Star
0%
Recommended Route Rankings

#27

in Colorado

#91

Overall
50 Views Last Month
23,595 Since Jul 27, 2015
Intermediate Intermediate

1%
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93%
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3%
1%

Photos

The view across Lost Lake into the IPW.
May 3, 2015 near Nederland, CO
Many stunning views on the way out of High Lonesome Trail loop (clockwise) 08/08/18
Sep 28, 2018 near Nederland, CO
A nice view half way up to Lost Lake.
Nov 24, 2015 near Nederland, CO
Lost Lake
Jul 5, 2021 near Nederland, CO
View of Lost Lake from the south shore.
Apr 15, 2024 near Nederland, CO
Great day for a swim!
Jul 28, 2015 near Nederland, CO

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Weather


Current Trail Conditions

Bad / Closed 5 days ago
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Check-Ins

Jul 20, 2022
Anna B
4.2mi — 1h 40m
Sep 5, 2021
Kaylee M
Aug 8, 2016
Matt Saunders
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