Three Sisters Wilderness: Willamette
Major peaks are: the North, Middle, and South Sisters (all above 10,000'), along with Broken Top, the best example in the Pacific Northwest of the effect of glaciation. Collier Glacier is the largest glacier in Oregon. Other geologic features include Rock Mesa, Collier Cone, and Yapoah Crater. Alpine meadows, waterfalls, lava fields, glaciers, and glacial lakes are abundant.
Three Sisters Wilderness area covers 281,190 total acres. There are approximately 260 miles of trail within the wilderness. The Pacific Crest National Scenic Trail traverses the wilderness for 40 miles. Most trails entering the wilderness begin in dense forests of Douglas-fir on the western slopes of the Cascades and ponderosa pine on the eastern slopes.
Forests in this wilderness consist mainly of Douglas-fir, silver fir, sub-alpine fir, mountain hemlock, western hemlock, true fir, lodgepole pine, and ponderosa pine. Alpine meadows are abundant.
The Three Sisters Wilderness became part of the National Wilderness Preservation System with the Wilderness Act of 1964.
Know Before You Go
- All overnight and some day-use visitors to the Three Sisters Wilderness must carry a Central Cascades Wilderness Permit if visiting between June 15 and October 15.
- Learn about Wilderness Regulations, including special area regulations in the Three Sisters Wilderness.
- "Leave No Trace" techniques are encouraged in Wilderness areas, including properly disposing of human and pet waste and carrying out all trash.
- There are no facilities within the Three Sisters Wilderness.
- Find out about the Weed Free Feed Requirement and other good Know Before You Go tips.
At a Glance
|Permit Info:||There are two types of entry permits required between June 15 and October 15 for entering Three Sisters Wilderness areas.
|Water:||Always carry water or a way to purify water.|
|Passes:||Some trailheads require a recreation pass. Check our Recreation Passes & Permits page for details|
|Information Center:||McKenzie River Ranger District|
The Three Sisters Wilderness can be accessed by many trailheads on the Willamette National Forest and Deschutes National Forest.
For trail information see:
- Pacific Crest Trail
- Foley Ridge Trail Area
- Olallie Trail Area
- McKenzie Pass Trail Area
- French Pete Trail Area
- Dee Wright Observatory
- Scott Lake Campground
- Alder Springs Campground
- Limberlost Campground
- Red Diamond Campground
- Hard Rock Group Campground
- Frissell Crossing Campground
Belknap Springs, Black Crater, Broken Top, Cougar Reservoir, Crane Prairie, Elk Lake, French Mountain, Harvey Mountain, Irish Mountain, Linnton Lake, Mt. Bachelor, North Sister, Packsaddle Mountain, South Sister, Sunstitute Point, Trout Creek Butte, Tumalo Falls, Waldo Mountain. Download free U.S. Forest Service Topo maps here.
Buy maps online
Go to the National Forest Store.
Go to Wilderness.net for online maps and other important Wilderness information.
Map showing recreational areas. Map Information
Alerts & Warnings
- Middle Fork RD: Prescribed Burn Planned for 5/24/23
- Middle Fork RD: Road contruction on Rd 21 will cause delays
- FIRE CLOSURES: Cedar Creek, Beachie Creek & Lionshead, Holiday Farm, Potter, etc
- Forest Road 46 open for 11 miles; portion closed to vehicle traffic
- Pile Burning November-March 2023