Yellowstone National Park · Idaho, Montana, Wyoming

South Boundary Trail: South Entrance-Harebell

12 mi of trail, end to end · about 1,100 ft of climbing · 6,874 ft–7,655 ft · earth surface · trail class Minimally Developed · hiking

Backcountry campsPicnic areasRanger stations

6,960 ft 6,891 ft · 2.6 mi high 6,981 ft

Along the way 8C1 8C7 Snake River Picnic Area South Entrance Ranger Station

Trailhead South Boundary Trailhead 6,885 ft Drive there

On the parks map

All 473 trails in Yellowstone National ParkFind a trailOn the parks mapPark 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.