Thunder Creek

Thunder Creek is an easy backpack of 13 miles with 600 feet of gain. The trail follows Thunder Creek through old-growth forests, passing many gravel bars on the way to the junction with McAllister Creek.

driving directions

Drive SR 20 to Colonial Creek Campground in the North Cascades National Park.

on the trail

Travel from Thunder Arm of Diablo Lake, along Thunder Creek as far as you like.  Enjoy occasional views of North Cascades peaks and glaciers, and seasonal abundant wildflowers or fall colors.


  • For backpaskers, camps are abundant, including Neve, McAllister, Tricouni, Junction, and Thunder Basin (just south of Park Creek Pass).
  • Suitable Activities: Backpacking, Day Hiking
  • Seasons: April, May, June, July, August, September, October, November
  • Weather: View weather forecast.
  • Difficulty: Easy
  • Length: 12.0 mi
  • Elevation Gain: 650 ft
  • 1,900 ft
  • Green Trails Diablo Dam No. 48
  • Green Trails Mt Logan No. 49
  • Green Trails McGregor Mtn No. 81
  • Trails Illustrated North Cascades National Park
  • Red Marker
    48.685250, -121.092947
    48.6852499456 -121.092947423
  • Red Marker
    48.620290, -121.053650
    48.6202897291 -121.053650379

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