Mount Jackson
What to Expect
Safety Advisory
The upper mountain is prime grizzly habitat with limited visibility around rock formations. Carry bear spray accessible on your chest or hip, not buried in your pack, and make noise regularly on the approach.
Above treeline there is zero shelter from lightning. If you see cumulonimbus clouds building or hear distant thunder, turn around immediately — the summit ridge is the worst place to be in an electrical storm.
Snow lingers on the upper route well into July most years, and steep snow patches on talus can be treacherous without microspikes or an ice axe. Check recent trip reports before committing to the summit push.
Trail Details
Pro Tips
Start no later than 6 AM — the summit push above treeline is fully exposed, and afternoon thunderstorms in Glacier roll in fast and without much warning. You want to be off the top by early afternoon.
Trekking poles are essential for the descent through the talus fields, where loose rock and tired legs are a bad combination. Gaiters help keep scree out of your boots on the upper section.
The route above treeline can be faint — look for cairns marking the way through the boulder fields. If you lose the cairns, stop and backtrack rather than freelancing a line across unstable rock.