Trail Running calendar near Seaside 2026-2027

A chip-timed trail race on the Crown Z Trail near Scappoose offering 5K, 10K, and half marathon distances, finisher medals, morning packet pickup at the trailhead, and shuttle service from Scappoose High School.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

A trail run or walk near Mossyrock Park offering a choice of a 5K or an 8K Hill Challenge that crosses Mossyrock Dam and features Riffe Lake views, mixed terrain, stroller-friendly sections, and age-based entry fees.

Trail races at Yacolt Recreation Park on July 5th 2026 include a 50 mile ultra, a new 50K Hellz Gate and a Purgatory marathon, with multiple aid stations, camping included and options for drop bags and crew access.

A vineyard road race in Dundee Hills on July 12, 2026 offering half, quarter, 5K and a 1 mile wine walk, chip timing, and a post-race tasting festival with many wineries.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

An obstacle course at Lacamas Lake Regional Park featuring a 4+ mile natural-terrain course with 10+ obstacles, a kids loop for ages 4–10, and a festival area with local vendors and BBQ.

Outlast Portland is a 6 hour trail challenge of six timed 5K laps run on the hour. Runners who complete four or five laps earn patches and those who finish all six earn a medal and a national leaderboard ranking.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

A trail event at Mt St Helens with a 50K circumnavigation and a 25K option; the 50K requires prior 50K experience and specific mandatory gear.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

A 20 mile single track trail run on the south western side of Mount St Helens, featuring lava fields, stream crossings, old growth forest and a 9 hour cutoff on National Forest lands.

Trail races near Mount St. Helens in the Mt. Margaret Backcountry, offering 50K, 20 mile and half marathon loops with remote terrain, ridgeline views, lakes and varied wildlife.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

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.

The Long Watch is a 6 hour, 12 hour and 24 hour loop endurance event at Donald Farm in Woodland, Washington, held alongside the Warrior Expo, with a manned aid station and a one mile loop past competition and vendor areas.

PDX 50 50 in Portland offers two route options: a roughly 50K course measured at about 31.5 to 32 miles and a longer roughly 53 mile option. The unsupported route is mostly flat with a technical mile in Forest Park and no course markings.

A low-key evening trail running series in Forest Park, organized as three Series of five races with courses around 4 to 7 miles. The Series includes standings, a post-Series awards gathering, and benefits the Forest Park Conservancy.

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.

The Three Course Challenge is a cross country meet at Camp Rilea north of Seaside, Oregon on September 26, 2026. It features multiple middle and high school courses, chip timing, team lodging, live drum corps performances, and awards.