Timberline Marathon

JUN
6-7
2026
Run through single track forest trails and across rustic bridges at Timothy Lake. This Oregon trail event offers marathon and half marathon distances with scenic views of Mt. Hood in the Cascade Mountains.
6-7 Jun 2026
25 miles 14 miles

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Timberline Marathon

The Timberline Marathon is a trail running event held at the Clackamas Lake Historic Ranger Station in Oregon. The courses are located within the Cascade Mountains and revolve around Timothy Lake. Participants navigate a route that consists primarily of single-track forest trails.

The event features several distance options held over two days:

  • 25.2 Miles (Saturday)
  • 14 Miles (Saturday)
  • 14 Miles (Sunday)

The terrain includes rustic bridge crossings and provides views of Mt. Hood. The half marathon distance has a required completion time of 4.5 hours. All distances are classified as trail races, taking place in a forested environment. Registration for all event categories typically opens in early August of the preceding year. Visit the organization's website for the most recent information.

25 mi
Marathon - Saturday
14 mi
Half Marathon - Saturday
14 mi
Half Marathon - Sunday