Trail Running calendar near Tualatin Mountains 2026-2027

A 100 mile trail race around Olallie Lake in Oregon with about 60 miles on the Pacific Crest Trail and multiple lake views. The event requires eight hours of trail work, has a 150 runner capacity, and is a Western States qualifier.

The Mook XC Invitational is a 5 km cross country race at The Mook at Alderbrook Golf Course in Tillamook, Oregon on September 19, 2026. The championship style course runs mostly on shortly clipped fairways and includes youth and adult categ..

A long running cross country meet at Camp Rilea near Seaside Oregon on September 26 2026. Multiple school divisions run four marked courses with chip timing, team awards and on site lodging options.

A 25K trail race in Corvallis, OR based at Peavy Arboretum, included in the 2026 Corvallis Trail Series. Entries include a race shirt, there is no day-of registration, and proceeds support local trail work and rescue services.

Challenge yourself on rugged rainforest singletrack at the Elk Kings Trail Races in Tillamook State Forest. Choose from 50K, 25K or 11 miles then celebrate at Smith Homestead with food, drinks, awards and a finisher pint glass.

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

Autumn Leaves at Champoeg State Park in St Paul, OR features 30K, 50K and 50 mile multi loop races on a fast, mostly paved 10K loop with gentle rollers. Headlamp is required for the first lap and aid stations are on course.

Two trail races at Coyote Wall across varied Gorge terrain, with **55K** and **25K** options, steep technical climbs, organized aid stations, and community fundraising for local organizations.

Thunder River in Cascade Locks Oregon offers 50K and 25K trail courses on the Pacific Crest Trail, passing under the Bridge of the Gods and finishing at Marine Park. Expect scenic singletrack and dramatic Gorge views.

A seven-mile single-track trail run up Dog Mountain with about 3000 ft of climb and a four-mile descent, set in the Columbia River Gorge with river and mountain views. Awards, beer and pizza available, and dogs are welcome.