Thunder Creek Trail

Route Description for Thunder Creek Trail

The Thunder Creek Trail is a backpacker’s gateway to the North Cascades. Beginning from Colonial Creek Campground on the shores of Lake Diablo, the trail takes off south, paralleling Thunder Creek for 1.6 km. Hikers can spend days exploring the trail and its numerous offshoots. For a solid day hike, make McAllister Camp your destination.

From the signed trailhead, begin hiking along the forested Thunder Creek Trail. Diablo Lake’s Thunder Arm accompanies you along the way, eventually narrowing to form the trail’s namesake Thunder Creek. This first 1.6 km or so is relatively flat, rolling gently as it follows the creek. Big, old growth trees decorate the trail. At 2.3 km, cross the footbridge over Thunder Creek and arrive at the first backcountry site, Thunder Camp. Privy available.

The trail begins to steepen as you continue along, reaching a junction at 2.7 km. The trail to the left climbs approximately 610 m in 4.0 km to Fourth of July Pass - an alternate destination with bigger views if you’re up for the challenge. Stay right for Thunder Creek Trail. Continuing along, you’ll pass Neve Camp in another 0.4 km. From here, Thunder Creek Trail climbs higher above Thunder Creek, offering peekaboo views of North Cascade peaks through the trees.

At 9.7 km reach the McAllister Horse Camp - not to be confused with McAllister Hiker Camp which is a little further along. The horse camp provides a good turnaround point, high above a big bend in the creek and a massive washout. Tricuoni Peak (2,469 m) is clearly visible from here, along with numerous North Cascade mountains to the southwest and northwest. Return the way you came.

Want to find other amazing hikes in North Cascades National Park? Check out the Diablo Lake trail, Maple Pass Loop or the Cascade Pass trail.