- Date hiked: 07/03/2021
- Hiked from: Dunraven Trailhead
- Distance hiked: 10 miles – 1 way
- Total elevation gain: 3,100 ft
- Maintained trail: Yes
- Overall Difficulty: 7/10 – It’s just really a long hike, especially for a day hike. Trail is solid.
- Overall Views: 8/10 – Very amazing alpine lake with mountain views
Hiked to Lost Lake as part of a 2 night camping trip at the south Lost Lake campsite. This lake is very popular with fisherman, some who make the trek out here as a day hike. We watched one guy who was fly fishing catch like 5 fish in under an hour, so I guess the fishing here is pretty good.
There are 4 campsites at Lost Lake. All back country camping in Rocky Mountain National Park requires a permit, and camping is only allowed in designated areas.
Lost Lake is located in a valley between Sugerloaf Mountain and Mount Dunraven.
We hiked here from the Dunraven Trailhead. Hike onto the North Fork Trail where you will enter the Comanche Peak Wilderness. The scenic trail will take you along the North Fork Big Thompson River on and off. 4 miles in you will cross the Rocky Mountain National Park boundary. The signage on the trail is well marked. There is a very steep section a few miles before the lake that will put your endurance to the test.
Lost Lake is the last of a string of lakes in this area. The others are Lake Husted, Lake Louise and Lake Dunraven. Two other unofficially named, beautiful alpine tarns above that are ‘Whiskey Lake’ and ‘Scotch Lake’.