Trail Running calendar near Tigard 2026-2027

Trail races at Mt. St. Helens Science & Learning Center offering 50K, 20 miles and a half marathon on remote singletrack with significant elevation change; an alternate 2026 route addresses a road closure.

A low-key Wednesday evening trail race series in Forest Park, Portland, with three seasonal five-race Series and hilly courses of about 4–7 miles. The Series supports the Forest Park Conservancy and includes standings and a post-series gath..

A 5k cross country race on a flower farm in Tillamook, Oregon, with a mud pit, two river crossings, wood-chipped trails, a corn maze, and fields of flowers. Two open races are held the same day and results are combined.

A low-key Wednesday evening trail race series in Forest Park, Portland, with three seasonal five-race Series and hilly courses of about 4–7 miles. The Series supports the Forest Park Conservancy and includes standings and a post-series gath..

A 100 miles trail race on the Pacific Crest Trail between Mt. Hood and Mt. Jefferson, starting near Olallie Lake. The course has about 11,700 feet of elevation gain and loss, a 30 hour time limit, and a 150 runner capacity.

A cross country 5k at Alderbrook Golf Course in Tillamook on September 19, 2026. The course runs mostly on shortly clipped fairways and is described as championship style and fast.

A cross country meet at Camp Rilea near Seaside, Oregon, offering four courses, chip timing, team lodging, awards, live drum corps performances, and weekend meal events.

A 3.1 mile obstacle course in Happy Valley with 22 symbolic obstacles supporting Guardian Group’s work against human trafficking, featuring live music, food carts, and an event T-shirt for registered participants.

At Willamette Mission State Park, Mission Possible offers chip-timed 5K and 10K trail races plus accessible 2.25- and 1.6-mile All Abilities loops, volunteers on course, and post-event pancakes; part of fees support the All Abilities event.

A trail running event on September 27 at the Teacup Ski Trail System with 7.5 km, a 2.2 km youth race and a 1.3 km kids race. The course mixes single track, forest roads and a climb back to the cabin finish.

A low-key Wednesday evening trail race series in Forest Park, Portland, with three seasonal five-race Series and hilly courses of about 4–7 miles. The Series supports the Forest Park Conservancy and includes standings and a post-series gath..

A last person standing trail race on Hamilton Island in the Columbia River Gorge where runners repeat a 4.13 mile loop each hour and must finish each loop in under 60 minutes to continue until one runner remains.

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 Wednesday evening trail race series in Forest Park, Portland, with three seasonal five-race Series and hilly courses of about 4–7 miles. The Series supports the Forest Park Conservancy and includes standings and a post-series gath..

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.

Experience the 16th annual trail running event at Silver Falls State Park featuring three different distances. Choose from a 50K marathon or 7 mile route through the scenic terrain of Silverton Oregon.

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.

Two trail races at Coyote Wall in the Columbia River Gorge on October 24 and 25, 2026. The event features a 55K with 8,200 ft climb and a 25K with 3,900 ft climb across technical terrain with staffed aid stations and community support.

A low-key Wednesday evening trail race series in Forest Park, Portland, with three seasonal five-race Series and hilly courses of about 4–7 miles. The Series supports the Forest Park Conservancy and includes standings and a post-series gath..