Trail Running calendar near Tillamook State Forest 2026-2027

A 25K trail race in Corvallis based at the OSU Forestry Cabin, part of the 2026 Corvallis Trail Series. Entry includes a race shirt, proceeds support local trail work, Corvallis Mountain Rescue Unit, and a shoe assistance program.

An in-person and virtual event on October 4, 2026 in Gresham featuring a 5K, a kids dash for ages eight and under, and a virtual run/walk. Registration opens in April and fees vary by event.

A low-key evening trail race series in Forest Park with three five-race Series from April to October. Races cover 4 to 7 miles, score into Series standings after four finishes, and benefit the Forest Park Conservancy.

Three fall trail races in Oregon’s Tillamook Forest: a technical 25K summiting Elk and Kings, a 50K along the Wilson River Trail, and a new 11-mile point-to-point through forested terrain.

A 13.1 mile trail race at Silver Falls State Park in Silverton, Oregon on October 18, 2026. Registration opens August 1, 2026; the field is limited to 1100 runners and the race will use two wave starts.

An annual October ultra at Champoeg State Park with 30K, 50K and 50 mile options on a mostly paved 10K loop. The event features aid stations, a cupless policy, drop bags, pacer rules and gender inclusive awards.

A low-key evening trail race series in Forest Park with three five-race Series from April to October. Races cover 4 to 7 miles, score into Series standings after four finishes, and benefit the Forest Park Conservancy.

Thunder River on October 31, 2026 is a trail running event in the Columbia River Gorge featuring 25K and 50K courses along the Pacific Crest Trail and a finish at Marine Park in Cascade Locks.

Flat out and back trail races on the Willapa Hills Trail near Chehalis, WA offering distances from 5K to 100 miles. Organized by OlyTrailRunners with aid stations, parking, camping options, and low entry fees.

A 7-mile single-track trail race at Dog Mountain in the Columbia River Gorge that climbs about 3 miles and 3,000 ft to the summit, then descends roughly 4 miles, with mountain and river views plus on-site food and awards.

A trail event at Silver Falls State Park on February 28, 2026 offering quarter and half marathon options plus a 12 mile ruck challenge. The ruck requires a 35 lb pack or 40 lb vest and courses use much of the Trail of Ten Falls.

A multi-day trail race in the Columbia River Gorge offering 100K, 50K and 30K distances from Marine Park in Cascade Locks, OR, with Thunder Island camping and a $75,000 prize purse.

A half marathon on forested trails in Blodgett, Oregon, the Mudslinger Trail Run follows rolling hills and wooded routes and sits alongside a paired mountain bike competition with food available onsite.