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© 2026 Roaming.Camp · Data from NPS, Recreation.gov, BLM, USFS, NWS, and the FCC.Operating on ceded ancestral land.Photography via Unsplash.

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Hike

O Leary Mountain

Passes Macduff Mountain
Inside Willamette National Forest
4,455 ft of climbing

8.5 mi one way · 4,455 ft climb · 5,128 ft high point · Very hard

In Willamette National Forest · Oregon · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

A very difficult trail to O'Leary Mountain in Willamette National Forest, climbing 4,455 feet over 8.5 miles one way.

Elevation

4,455 ft of gain and 1,734 ft of descent.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

3.5 mi from the trailhead
Delta
Campground · Oregon
3.8 mi from the trailhead

More hikes nearby

Ranked the same way, within twenty-five miles.

24 mi from you
Camp Lake
- Ends at Camp Lake
- Inside Three Sisters Wilderness
- 1,288 ft of climbing
4.9 mi one way · 1,288 ft climb · Moderate
Three Sisters Wilderness · Camp 6 mi away

Elevation along the trail from the start. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Macduff MountainAlong the way · 4.5 mi in
Cougar ReservoirNearby · 0.2 mi in
McLennan MountainNearby · 6.4 mi in
O'Leary MountainNearby · 8.3 mi in

Map

The route at the trailhead. Drag with two fingers, or hold a key to zoom.

Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Download the trail and feature data.

At a glance

Length: 8.5 mi
Shape: One way
Gain: 4,455 ft
Descent: 1,734 ft
High point: 5,128 ft
Low point: 2,179 ft
Difficulty: Very hard
Managed by: U.S. Forest Service
State: Oregon
Camps within 15 mi: 20
Trailhead: 44.1296° N · 122.2296° W

Get directions Open the map

Slide Creek

Campground · Oregon

4.1 mi from the trailhead

Mckenzie Bridge

Campground · Oregon

19 mi from you

Iron Mountain-Cone Peak Loop

Summits Iron Mountain
Inside Willamette National Forest
2,788 ft of climbing

6.1 mi of trails · 2,788 ft climb

Willamette National Forest · Camp 3 mi away

Scott Mountain

Summits Scott Mountain
Inside Mount Washington Wilderness
Camp 2 mi away

1.4 mi one way · 622 ft climb · Very hard

Mount Washington Wilderness · Camp 2 mi away

South Sister Climber

Passes Lewis Glacier
Inside Three Sisters Wilderness
3,247 ft of climbing

2.3 mi one way · 3,247 ft climb · Easy

Three Sisters Wilderness · Camp 4 mi away

Iron Mountain

Summits Iron Mountain
Inside Willamette National Forest
1,397 ft of climbing

2.0 mi one way · 1,397 ft climb · Very hard

Willamette National Forest · Camp 3 mi away

Crescent Mountain

Passes Crescent Mountain
Inside Willamette National Forest
2,467 ft of climbing

7.8 mi one way · 2,467 ft climb · Very hard

Willamette National Forest · Camp 2 mi away

Signal

Cell coverage here

VerizonLTE · Poor

FCC coverage data · signal varies in remote terrain

Weather

7-day forecast

Thu75°50°Mostly Sunny
Fri75°50°Sunny
Sat80°52°Sunny
Sun83°52°Sunny
Mon78°51°Sunny
Tue76°50°Mostly Sunny
Wed77°Mostly Sunny

Thu: Mostly Sunny then Slight Chance Light Rain · wind 2 to 7 mph SW

National Weather Service · refreshed hourly

More like this

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Olallie
- Passes Taylor Castle
- Inside Willamette National Forest
- 6,126 ft of climbing
23.3 mi one way · 6,126 ft climb · Very hard
Willamette National Forest · Camp under a mile away
Crescent Mountain
- Passes Crescent Mountain
- Inside Willamette National Forest
- 2,467 ft of climbing
7.8 mi one way · 2,467 ft climb · Very hard
Willamette National Forest · Camp 2 mi away
Elkhorn Ridge
- Near Dog Tooth Rock
- Inside Willamette National Forest
- 5,009 ft of climbing
5.5 mi loop · 5,009 ft climb · Very hard
Willamette National Forest · Camp 5 mi away
Cone Peak
- Ends at a viewpoint
- Inside Willamette National Forest
- 1,216 ft of climbing
3.4 mi one way · 1,216 ft climb · Very hard
Willamette National Forest · Camp 3 mi away