Trail Running calendar near Tualatin Mountains 2026-2027

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.

Mission Possible at Willamette Mission State Park on 26 September 2026 offers chip-timed 5K and 10K trail races plus accessible All Abilities 2.25-mile and 1.6-mile loops, with volunteers on course and post-race pancakes and snacks.

A trail running event at Teacup Ski Trail System on Sept. 27 with a new course and three distances, including youth and kids races. The route features lake views, varied terrain, one water station, and on-site parking and restrooms.

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 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.

Condor 25K Trail Run is a 25K trail race in Corvallis Oregon on October 4 2026 at Peavy Arboretum. Registration includes a Condor shirt, there is no day of registration, and proceeds support local trail projects and rescue services.

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, 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 three-day trail running event at Silver Falls State Park in Silverton, Oregon, offering distances from 5K to 50K. Registration opens Aug 1 and closes Oct 11, 2026, with fees that vary by race distance.

Elk-Kings is a Tillamook Forest trail race series based at Smith Homestead offering a technical 25K summiting Elk and Kings, a 50K along the Wilson River Trail, and a new 11 mile point to point through river-side forest.

Looped 10K course near St. Paul, OR with 30K, 50K, 50 mile and a kids 1K. Mostly paved, short dirt section, two aid stations and a cupless hydration policy.

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 race day on October 31, 2026 in Cascade Locks, Oregon featuring a 25K point to point and a 50K lollipop course along the Pacific Crest Trail and Gorge 400 trail, finishing at Marine Park with aid stations, timing, and post race awar..

A flat, out-and-back trail event in Chehalis with five distances from 5K to 100 miles, packed-gravel surfaces, multiple aid stations, low entry fees, and proceeds supporting the Willapa Hills Trail.

A 7 mile single track trail race up Dog Mountain with about 3000 ft of ascent to the summit and a 4 mile descent. Scenic Columbia River and mountain views are part of the course; well behaved dogs are welcome.

Trail ultraruns around Henry Hagg Lake near Gaston, Oregon, offered as a 50K (two laps) and a 25K (one lap). Single-track, muddy trails with gravel sections, cupless aid stations, finisher socks and prizes for top finishers.

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.

Scenic trail races through the Columbia River Gorge staged at Marine Park in Cascade Locks, offering 100K, 50K and 30K distances, on-site Thunder Island camping, chip timing, stocked aid stations, and a $75,000 prize purse.

A half marathon on the Starker Forests trails near Blodgett, Oregon, run as part of the Mudslinger Festival with limited entry, age group awards, and an optional combined scoring with the Mudslinger XC mountain bike race.