White Mountain National Forest · New Hampshire, Maine

Boulder Loop Trail

3.0 mi of trail, end to end · native material surface · trail No. 32446 · trail class 3 · typical grade 12-20% · tread 18-24 inches wide · hiking, bike

Trailhead Boulder Loop Trailhead Drive there

Boulder Loop Trailhead the Forest Service's write-up

Day-use fee required during open season.  · season Mid-May to mid-October

This trailhead accesses the popular Boulder Loop Interpretive Trail as well as the Lower Nanamacomuck Ski Trail. During off-season when vehicular traffic is closed over the Albany Covered Bridge and on Passaconaway Road, parking is available in the covered bridge parking lot adjacent to Kancamagus Highway, with foot access over bridge to Boulder Loop trailhead.

The Boulder Looper Interpretive Trail offers a self-guided tour of boulder fields and various forest types. This trail gives insight to many features of the White Mountain National Forest. Fifteen stops are featured along the way, offering a glimpse of the forest’s history, biology, and Forest Service management.

Additional Resources

Boulder Loop Interpretive Trail Guide with Map

This trailhead on fs.usda.gov

Every trail in White Mountain National Forest

All 512 trails in White Mountain National ForestFind a trailForest on fs.usda.gov

About this trail's facts

The lines are the US Forest Service's National Forest System trails layer (public domain), read 2026-10-16 and simplified for the map; the length is the line's, end to end, and the class, surface, grade and tread width are the forest's own entries where it publishes them - a forest that publishes the centreline alone has none. The trailheads and the points along the way are the Service's recreation points, and the write-ups its own recarea 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 forest's own site before you go.