Surprise Mountain

Central Cascades

updated 2 weeks ago

The trail to Surprise Mountain is generally in good condition, with no significant snow reported as of September 1. The climb to Surprise Lake is relentless, gaining 2600 feet in 4 miles, but features numerous water crossings and is mostly shaded. The "abandoned" trail from Surprise Gap to the PCT is considered an excellent and easy-to-follow route, despite some loose rock, August 12. The road to the Surprise Creek Trailhead is suitable for all vehicles, September 6, though one report from July 25 recommended high clearance for Tonga Ridge Road due to erosion and sinkholes. Blueberry and huckleberry crops were reportedly absent in late August/early September.

Generated from 12 trip reports. Trails change faster than reports do, so check anything you’d turn around for.

What hikers ask about Surprise Mountain

Generated from the most recent trip reports, newest 2 weeks ago. Check anything you’d turn around for.

The road to the Surprise Creek Trailhead is reported as suitable for all vehicles as of September 1 and September 6. However, an older report from July 25 noted that Tonga Ridge Road, which may be an access route, had a berm requiring higher clearance and showed signs of erosion and sinkholes.

More in Central Cascades

Trail notes generated from recent reports. Conditions change fast.

Sources

Central Cascades > Stevens Pass - West

Did a fun lollypop-esque trip through the surprise/thunder mountain area with some spontaneous off-trail travel. There hasn't been much written-up about the specific route we did that we could find, s...

Central Cascades > Stevens Pass - West

Single overnight backpack to Glacier Lake with a summit of Surprise Mountain. Due to the PCT being closed at Deception pass and thru-hikers detouring over to Dorothy Lake, this usually very busy area ...

Central Cascades > Stevens Pass - West

Through-hike the Alpine Lakes and Henry M. Jackson Wilderness, from Tucquala Meadows to Stevens Pass North. Planned as a 4-day trip but turned into 5 once we got a jump start the first evening; about ...

Central Cascades > Stevens Pass - West

Day trip to Surprise Mountain via Tonga Ridge RoadDrive:*There is currently one berm that requires higher clearance, ideally shorter wheel base to clear it on Tonga.  (Past the cutoff for Tonga ridge ...

Central Cascades > Stevens Pass - West

Overnight trip with camp on the summit of Surprise Mountain from 1.19-20 2026.ROADto the trailhead was blocked by a giant snowpile about 0.3 miles from the regular trailhead, but there was a large par...

Central Cascades > Stevens Pass - West

Hiked from Surprise Lake Trailhead to Surprise Gap and then up to the old lookout site on the top of Surprise Mountain.  Great workout and good views for lunch.  Trail is in good condition but has a l...

Central Cascades

For some reason, I decided to try for an early spring trip up to Surprise and Glacier Lake, and then Surprise Mountain. Even more amazing is that I tricked a solid group of friends into joining me!The...

Central Cascades

Beautiful blue bird day for a winter hike. We used snowshoes after reaching surprise lake. There were other tracks to follow until reaching glacier lake and then we made our own trail. After reaching ...

Central Cascades

Trail in excellent condition all the way to Surprise Mountain.  However, be aware starting out that there are occasional holes in the boardwalks up until you cross the large log over the creek. Potent...

Central Cascades

Summer is winding down, and I had two goals for one of the final summer weekends: swim in an alpine lake to cool off on a hot day, and eat some wild blueberries. I succeeded at one of these, and the o...