Twin Sisters East Peak
Twin Sisters Peaks viewed from Trail Ridge Road
Highest point
Elevation	11,433 ft (3,485 m)[1][2]
Prominence	2,298 ft (700 m)[2]
Isolation	4.36 mi (7.02 km)[2]
Listing	Colorado prominent summits
Coordinates	40°17′20″N 105°31′06″W / 40.2888732°N 105.5183324°W / 40.2888732; -105.5183324[3]
Geography
Twin Sisters East Peak Colorado
Location	Rocky Mountain National Park, Larimer County, Colorado, U.S.[3]
Parent range	Front Range[2]
Topo map	USGS 7.5' topographic map Longs Peak, Colorado[3]
Climbing
Easiest route	hike, scramble

Twin Sisters West Peak
Highest point
Elevation	11,418 ft (3,480 m)[4][5]
Prominence	2,298 ft (700 m)
Coordinates	40°17′21″N 105°31′10″W / 40.289087°N 105.519385°W / 40.289087; -105.519385[5]

The Twin Sisters Peaks are mountains in Colorado, located in the Front Range in Larimer County, Colorado, straddling Rocky Mountain National Park and Roosevelt National Forest.

Historical names

• Lillie Mountain
• Lillie Mountains
• Tahosa Mountain
• Twin Sisters Peaks – 1908 ^[3]