Trail Running calendar near Diablo 2026-2027

An endurance trail event in the Chuckanuts near Bellingham, Washington on May 9, 2026. Runners repeat summit laps in timed 12, 6 and 3 hour formats, including 2 and 4 person relays, to raise funds and awareness for clean air.

A fundraising 4.45 mile run and walk in Sumas, WA on mixed road and trail with steep climbs, descents and obstacles. Proceeds support a local family facing a rare neurological condition. Participants must be 16 or older.

Trail races in the North Cascades near Winthrop offering 50M, 50K and 25K courses through wildflower meadows and mountain trails, finishing at Big Twin Lake Resort over race weekend in mid May.

A fundraising running event in Bellingham on May 16 2026 offering a half marathon, 10k and trail 3k and 6k. Races start and finish at Fairhaven Park and proceeds support Girls on the Run of NW Washington.

Trail running at Bear Mountain Park on May 23, 2026 with 30 km, 15 km and 8 km courses featuring significant elevation gain. A 500 m kids race is included and several charities and sponsors are associated with the event.

Trail races on Sumas Mountain with 10K, 25K and 50K options on rugged single-track. Entry fees support clean water projects abroad and the event is cupless and Trail Sisters approved.

An eight hour loop event at Rolley Lake Provincial Park on May 30, 2026, where runners complete 8 km laps to raise funds for Mission Search and Rescue. Onsite, relay, 1 km fun run and virtual options are available.

Two days of single loop trail races in Lake Chelan wine country with distances from a 1 mile kids race to a 50K. The event features runnable pine forest single track, on site camping, cupless aid practices, and substantial elevation gain.

Two days on Vedder Mountain near Chilliwack with trail races (50 km, 25 km, 10 km) on day one and a multisport challenge of SUP, mountain biking and trail running on day two. Organized by Heads or Trails.

Timed 12 hour, 6 hour and 3 hour loop runs on a 1.70 mile paved circuit around Lake Tye in Monroe, WA. Aid stations, chip timing, participant medals and post race food and awards are provided.

Muddy Paws Fun Run offers 2.1 mile, 5K and 10K trail options at the Port of Skagit Nature Trails while raising funds for local K9 units. The event uses staggered start groups and does not record official race times.

FORGE is a 12 hour backyard ultra near Swinomish Casino in Skagit County, WA. Runners complete a 4.167 mile loop each hour; finish all 12 loops for 50 miles. Awards include trophies and a $500 prize for fastest cumulative time.

A 5K course with over 25 obstacles and about 2.5 million cubic feet of foam at Cloverdale Agriplex, plus a family zone, live DJ, food vendors and a licensed beer garden.

Trail races on Orcas Island with 50K, 25K and a two-day Double 75K featuring old-growth forest single track, substantial elevation gain, marked aid stations and a seaside base at Doe Bay Resort. Ferry access is required.

A Last Person Standing trail race on a 2.18 mile loop in Japanese Gulch, Mukilteo. Timed loops use shrinking cutoffs from 32 minutes and the event includes a full aid station plus a fastest lap competition for men and women.

Timed loop trail races at Sasquatch Mountain Resort on June 20, 2026, with 24 h, 12 h and 6 h formats on a 10 km loop (about 500 m gain per lap); a 1 km kids out-and-back is also offered.

A weekend alpine trail running event in North Cascades National Park with guided support, campsite logistics and multiple route distances including 12 mile, 25 km, 26 mile and 40 mile options.

A multi day endurance event at Lake Padden offering six, twelve, twenty four and thirty two hour races on a marked 2.6 mile loop with night lighting, on course aid, and awards for top finishers.

An ultrarunning event in Manning Park offering 124 mile, 100 km and 40 mile courses on remote technical single track with about 26,240 feet of climb. The 2026 edition is sold out and managed by a wait list.

A trail race on August 8, 2026, starting at Fairhaven Park and running into Larrabee State Park. Routes showcase forest, lakes, and narrow ridgelines with options of 12K, 25K and 50K and significant elevation gain.