Difficult trails in Colorado

Devils Thumb to King Lake Loop

place Boulder County, Colorado

24.6 km · 1005 m

North Fork of The Big Thompson Loop

place Larimer County, Colorado

43.5 km · 2119 m

Fern Lake to North Inlet Trail

place Larimer County, Colorado

37.6 km · 1586 m

Rocky Mountain National Park - Continental Divide Loop

place Grand County, Colorado

41.5 km · 1294 m

Snowmass to East Snowmass Creek Loop

place Pitkin County, Colorado

36.0 km · 1852 m

Lost Creek Wilderness Loop - South

place Jefferson County, Colorado

36.0 km · 1601 m

Four Pass Loop

place Pitkin County, Colorado

42.3 km · 2305 m

Weminuche High Route

place La Plata County, Colorado

77.0 km · 3820 m

Lost Creek Wilderness Loop

place Jefferson County, Colorado

57.7 km · 1928 m

Weminuche Wilderness Traverse

place Mineral County, Colorado

145.5 km · 4983 m

American Discovery Trail - West

place Arapahoe County, Colorado

3183.5 km · 48994 m

Twin Lakes Trail

place Gunnison County, Colorado

9.3 km · 532 m

Roaring Fork Trail

place Grand County, Colorado

20.2 km · 1183 m

Lizard Head Trail

place San Miguel County, Colorado

39.8 km · 1996 m

Little Trappers Trail Via Carhart Trail

place Garfield County, Colorado

14.5 km · 665 m

Long Lake, Isabelle Lake and Pawnee Lake via Pawnee Pass Trail

place Boulder County, Colorado

24.7 km · 1336 m

Round Mountain Trail

place Larimer County, Colorado

13.8 km · 875 m

Cathedral Lake Trail

place Pitkin County, Colorado

8.8 km · 639 m

Cedar Mountain Trail

place Teller County, Colorado

5.2 km · 307 m

Missouri Lakes Trail

place Eagle County, Colorado

14.8 km · 695 m