Trail Running calendar near Seaside 2026-2027

A low-key evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

Crown Z Trail Run is a chip timed trail race from Ruley Trailhead toward Vernonia and back, offering 5K, 10K and a half marathon. Shuttles run from Scappoose High School and packet pickup is the morning of the event at the trailhead.

A low-key evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

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.

A trail running event at Yacolt Recreation Park on July 5, 2026, featuring a 50 mile ultra plus a 50K and a marathon. Courses use technical single track, multiple aid stations, camping, and a post race meal.

A timed run through private vineyards in Dundee Hills with multiple distances and varied terrain. The event includes a post race festival with wine tasting from about two dozen wineries, commemorative glass and medal, plus a virtual option.

A low-key evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

An obstacle course event at Lacamas Lake Regional Park on 07/18/2026 featuring a 4 mile course with 14+ natural obstacles and a kids loop for ages 4 to 10. Competitive and community waves include cash prizes for top finishers.

A 6-hour trail challenge in North Plains where runners complete a 5K every hour to earn patches, a finisher tee, and a chance at national leaderboard prizes including a $1,000 national award.

A low-key evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

A remote trail event around Mt St Helens offering 50K and 25K courses over lava fields, boulder terrain, rivers, and forest. The 50K requires a prior trail 50K and mandatory safety gear.

A low-key evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

A 20 mile single track trail run along the southwestern side of Mount St. Helens starting at Marble Mountain Sno Park. The course crosses lava fields, streams, and old growth forest and has 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 race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

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 evening trail race series in Forest Park with three five-race Series from April to October, featuring hilly courses of about 4 to 7 miles. Series standings require at least four races and the event benefits the Forest Park Conserv..

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 long running cross-country meet at Camp Rilea near Seaside, Oregon, offering multiple marked courses for middle and high school runners, chip timing, team lodging, awards, and live drum corps performances over a weekend of activities.

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.