Lost Lake, Lake Husted, and Lake Louise
Trailhead: Dunraven (North Fork)
Distance: 9.7 mi
Elevation Change: 2,814'
The trail starts outside the park, quickly arriving at the North Fork of the Big Thompson and passing by Camp Cheley. When you reach the Halfway sign, it gets steep: although six-tenths of the distance has been traversed, only half the altitude has been gained.
Distance: 10.4 mi
Elevation Change: 3,188'
Foster recommends bushwhacking up the slope from the south side of Lost Lake, but I thought it was easier to take the grassy ramp from the north shore.
Distance: 10.9 mi
Elevation Change: 3,120'
From Husted Lake, head across the tundra nearly due west a bit less than half a mile.