Boulder-Grand Pass Trail

Boulder-Grand Pass Trail is a 2.3-mile out-and-back foot trail in Rocky Mountain National Park, Colorado. It climbs 1,063 ft to a high point of 11,622 ft. Difficulty: moderate, from the NPS hiking-rating formula.

Boulder-Grand Pass Trail, Rocky Mountain National Park
Photo: Pmagsco · CC BY-SA 3.0 · Wikimedia Commons

Plan this hike

Open Boulder-Grand Pass Trail on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Rocky Mountain. Rocky Mountain has permits or reservations for some areas: see the Rocky Mountain page for what's needed.

More trails in Rocky Mountain

All 233 trails in Rocky Mountain National Park