Length: 3.55 mi
Est. time: 1h 54m
Gain: 1,400 ft
Loss: 639 ft
Max elev: 9,767 ft
Elevation profile
+1,400 ft gain · −639 ft loss — an estimate from a DEM.
Trailhead parking (Place)
Glacier Basin Campground (Campground)
Bierstadt Lake Trail + Flattop Mountain Trail Junction - Cub Lake
6.5 mi · +1,482 ft · ~2.9 hr (est.)
Flattop Mountain Trail Junction - Cub Lake + Moraine Park - Mill Creek Basin
7.6 mi · +2,200 ft · ~3.6 hr (est.)
Plan smart, verify on site
Length, elevation, and difficulty are estimates derived from open data (NPS Public Trails GIS, high confidence) — not a safety guarantee. Conditions change; check current closures, weather, and water, and carry the essentials. Always defer to NPS.gov and park rangers.