Trail Running calendar near Siler 2026-2027

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 trail race around Soaring Eagle Park in Sammamish on July 4, 2026 with distances from 5 to 25 miles plus a virtual 25 mile option. Aid stations every 2.5 miles, commemorative shirts and medals, food and a chance to win baseball ticket..

A trail race through Yacolt Burn State Forest on July 5, 2026, offering a 50-mile, 50K, and marathon course with rugged terrain, aid stations, camping, a post-race meal, and a bell-ringing finish tradition.

A forested loop at Seward Park on a Lake Washington peninsula offering 4.2 mile and 10k trail options, on-course aid stations, and park-side parking near the start. Part of the Tuesday Night Trail to Grill Series.

Grey Rock Trail Runs on July 11, 2026 near Yakima, WA offers 25K and 12K out and back single-track courses with mountain views, aid stations, and medals for the top three men and women.

Experience the lush forests and rolling hills of Cougar Mountain Regional Wildland Park at this trail event near Seattle. Choose between 5k, 10.8 mile, and 19.5 mile distances on varied terrain ranging from technical to groomed trails.

Mud Mountain Trail Fest is a trail running event at Mud Mountain Dam in Enumclaw, Washington on July 11, 2026. It offers a 4 Miler and a 10K on forested trails described as moderately challenging.

An all-ages glow run through the Snoqualmie Tunnel on the Palouse to Cascades trail with LED lighting, two participant waves, onsite merch options, and a post-race outdoor block party with food, games and drinks.

Monthly trail races at Cougar Mountain offer a range of distances across a summer series and an October autumn event. The events raise funds for King County Parks and include USATF championship and youth races in August.

A 5K trail run and walk on Tiger Mountain with an out and back route over unpaved roads and a short cross country section. The event is clothing optional and is sponsored by Tiger Mountain Family Nudist Park.

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 mountain race weekend at Crystal Mountain on July 17-18, 2026 featuring a half marathon, downhill 10K and a 5K hill climb. Registration includes an all-day gondola pass and courses run on dirt trails through meadows and forest.

A 100 mile endurance race through Washingtons Cascade Mountains centered in Easton, with forested and rugged trails and a long-standing volunteer and radio operator community. Finishers under 32 hours may qualify for a Western States lotter..

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.

A roughly 3-mile obstacle trail run at Joint Base Lewis-McChord on 18 July 2026, with waves of 25 released every five minutes and entry capped at 1,500. Packet pick-up includes a shirt, medal, bib and a post-race beverage ticket.

A one-day community trail running festival in Seattle featuring social group runs in two route lengths, an expo with running brands and vendors, food and a raffle, and a cupless policy with no dogs except service animals.

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.

Trail races near Greenwater, Washington offering 25K, 50K and 50 mile distances with Mt Rainier views. Courses use mostly single track with substantial climbing, staffed aid stations, and primitive camping at Ranger Creek Campground.

Weekend volunteer event in Cougar, WA where participants hike about 9 miles roundtrip to carry water into remote aid stations for a race. Camping is available nearby and organizers provide food and some loaner gear.