Yosemite National Park · California

Happy Isles Loop Road

1.3 mi of trail, end to end · about 20 ft of climbing · 3,993 ft–4,030 ft · asphalt surface · trail class Highly Developed · bike, hiking

Bridges

Along the way Happy Isles Bridge

Trailheads Happy Isles Trailhead 4,031 ft Drive there · Mirror Lake Trailhead 4,001 ft Drive there

On the parks map

Other trails from the same trailheads

John Muir Trail · 24 mi · from Happy Isles Trailhead
Valley Loop Trail · 16 mi · from Happy Isles Trailhead
Mirror Lake Road · 0.8 mi · from Mirror Lake Trailhead

All 137 trails in Yosemite National Park Find a trail On the parks map Park on nps.gov

About this trail's facts

The lines are the National Park Service's public trails layer, the trailheads and the waterfalls, views, peaks and historic places along them the Service's public points of interest, read 2026-10-16 and simplified for the map; the length is the line's, end to end. The write-ups are the Service's own "things to do" text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the park's own site before you go.