Are dogs allowed on O’Brien Trail?

Yes, dogs are allowed on O’Brien Trail but must be kept on a leash at all times. Pack out waste and respect wildlife.

Do I need a permit to hike O’Brien Trail?

No, O’Brien Trail does not currently require a permit. Still check for seasonal closures or day-use fees with the managing agency before heading out.

How difficult is O’Brien Trail?

O’Brien Trail is rated difficult. It is 7.7 miles long with 2,323 feet of elevation gain. Difficulty ratings reflect a combination of distance, elevation gain, and terrain — your experience will depend on your fitness level and trail conditions.

Status unknown — verify before visiting

We don't have current condition data for this trail. Check with the land manager before you go.

See Montana trail conditions

DifficultLoop

Montana

O’Brien Trail

Missoula, Montana

7.7 mi

Distance

2,323 ft

Elev. Gain

3h 18m

Est. Time

Loop

Route Type

Difficult

Difficulty

About This Trail

We don't have an editorial description for O’Brien Trail in our cache yet. The planning stats above (distance, elevation gain, estimated time, route type) come from the source listed on this trail.

For current conditions, closures, and route notes, check the official sources below — they're the authority for this trail, not us. Spot something we should add?

Trail Conditions

Unknown

We have no current condition data for this trail. Check with the operator before you go, and submit a report below if you've been recently.

No recent condition reports. Be the first to share what you see on the trail.

Elevation Profile

Min:1,091 ft

Max:1,378 ft

708 ft

Trail Details

Route Type: Loop
Surface: Dirt

Official sources & verification

We don't have curated agency sources for this trail in our cache yet. Outdoors is not the permitting authority — confirm conditions, permits, and access with the managing agency before you go. If you know who manages this trail, please tell us.

Reviews

No reviews yet

Be the first to share your experience and help others plan their visit.

Legacy import — verify before navigating

Path geometry came from our pre-launch legacy database. Routes have not yet been re-verified against the operator and may differ from the actual trail.

Hunt context