Oregon · Hiking

O Leary Mountain

O Leary MountainPhoto: Robert Ashworth from Bellingham, WA., USA, CC BY 2.0 (via Wikimedia Commons)
18.0 mi
round trip
5,390 ft
climb
5,110 ft
high point
Out and back
route
May–Oct
best months

Is O Leary Mountain open right now?

Closure in the area

There's a closure order in Willamette National Forest. It doesn't name O Leary Mountain, so check the source for the area it covers.

As of · Source: USFS · Willamette National Forest. Agencies don't list every closure — check before you go.

O Leary Mountain is a hard hike in the McKenzie River Ranger District of Oregon's Willamette National Forest, managed by the Forest Service. The route is an out-and-back of about 18 miles, with a total elevation gain of 5,390 feet and a high point of 5,110 feet. The climb is front-loaded, with the steepest stretch at about 0.7 miles in, where the grade reaches 39 percent. The trail is natural-surfaced and allows bikes. The trip is estimated to take about 8.5 hours, and the route is open year-round. Summer is the most comfortable time to go. Typical averages from a nearby weather station at Santiam Junction, which sits about 1,360 feet lower than the high point, show July and August highs around 76°F with lows near 42°F. Winter is cold, with January highs around 38°F and lows near 24°F. The Echo hike starts just 0.2 miles away, and East Fork and Castle Rock are both within about 2 miles. For camping, Delta campground is about 3.5 miles off.

Local outfitters

Not on Roamze yet. Their page has how to reach them.

  • Best time to go · May–Oct

    Best time to visit O Leary Mountain

    Best months: May–October. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

    1. Jan

      38° / 24°

    2. Feb

      41° / 24°

    3. Mar

      44° / 26°

    4. Apr

      49° / 29°

    5. May

      58° / 35°

    6. Jun

      65° / 38°

    7. Jul

      76° / 42°

    8. Aug

      76° / 42°

    9. Sep

      69° / 39°

    10. Oct

      56° / 33°

    11. Nov

      42° / 28°

    12. Dec

      36° / 23°

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Santiam Junction, OR, 25.5 mi away at 3,750 ft. The station sits about 1,400 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Keep exploring — more trails worth the drive

Route details

Distance
18.0 mi round trip
Climbing
About 5,390 ft
Summit
5,000 ft
Difficulty
Hard
Time
About 8 hours

Season

Season: Year-round.

Questions about this route

How long is the O Leary Mountain on Macduff Mountain?

About 18.0 mi round trip.

How much elevation gain is on the O Leary Mountain?

About 5,390 ft of climbing round trip.

How hard is the O Leary Mountain?

It is rated hard.

How long does the O Leary Mountain take?

About 8 hours round trip.

When is the best time for the O Leary Mountain?

Year-round.

Conditions and forecast on Macduff Mountain

Daily highs and lows, wind and the chance of precipitation at the summit and route start for the next 7 days, from the Open-Meteo model.