Tenaya Lake Trail is a 15.1-mile out-and-back foot trail in Yosemite National Park, California. It climbs 783 ft to a high point of 8,705 ft. Difficulty: strenuous, from the NPS hiking-rating formula.

Ten Lakes to Tenaya Lake
20.4 miles / 32.8 km one way
Read the official NPS description
The Park Service lists a longer route that uses this trail: Ten Lakes to Tenaya Lake, 40.8 mi round trip. The mapped line of this trail by itself is 15.1 mi.
Open Tenaya Lake Trail on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Yosemite. Yosemite has permits or reservations for some areas: see the Yosemite page for what's needed.