Three Sisters

Elevation (feet): 10,358
Elevation (meters): 3,157
Continent: North America
Country: United States
Range/Region: Cascade Range
State: Oregon
Latitude: 44.1358
Longitude: -121.772
Difficulty: Basic Snow/Ice Climb
Best months for climbing: May, Jun, Jul, Aug
Year first climbed: 1931
First successful climber(s): Colin Chisholm
Nearest major airport: Portland, Oregon
Convenient Center: Bend, Oregon (West), Salem or Eugene, Oregon (East)

Three Sisters is a cluster of three volcanic peaks, North Sister, Middle Sister, and South Sister, located in Central Oregon. North Sister is the oldest of the three, and Middle Sister formed from eruptions in North Sister's flank. South Sister is the youngest, and is believed to have erupted as recently as 1853. South Sister is also the highest, as her siblings have eroded with time. The three peaks are the third, fourth and fifth highest peaks in Oregon, behind Mount Hood and Mount Jefferson. All three peaks are located within the Three Sisters Wilderness Area, and are easily accessible from the Pacific Crest Trail.