Blue Lake Trail #3645 (Diamond Peak Wilderness)

This is one of the most popular access trails into the Diamond Peak Wilderness.

Most hikers stop at Blue Lake (less than a mile) for a short day hike. Blue Lake, one of the larger in the wilderness, offers excellent fishing and camping opportunities, as well as beautiful scenery. The trail ends at the Diamond Peak Trail, the main north/south route on the western side of the wilderness. The mountain slopes are covered with an alpine forest of mountain hemlock, silver and noble firs, and western white pine.

The adventurous can continue on to the more remote Happy Lake, for a more strenuous trek. Some hardy wheelchair users  have maneuvered this trail as far as Blue Lake.

At a Glance

Permit Info: Wilderness Self-Issue Permit required for both day use and overnight stays from June 15 through October 15. Free permits are self-issued at the trailhead.
Usage: Heavy
Water: Blue Lake
Information Center: Middle Fork Ranger Station

General Information


Access is from Blue Lake Trailhead.

General Notes:

Map of Blue Lake trail

Close to:


Day Hiking

Difficulty Level: Easy to More Difficult


Difficulty Level: Easy to More Difficult

Horse Riding

Recreation Areas

Recreation Activities



  Area/Length : 
1.7 miles

  Latitude : 

  Longitude : 

  Elevation : 
5600 feet - 6000 feet