Black Diamond
Trail Running Calendar near Black Diamond 2026-2027
Explore the top trail runs near Black Diamond for 2026-2027! We've gathered 48 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A timed stair-climb at T-Mobile Park where participants tackle either 900 or 1,800 stairs to raise funds for the Cystic Fibrosis Foundation. Climbers start in waves by self-identified pace and join an official after party.
A themed 5K walk/run at Magnuson Park with costume options, Villain Zones, Heroes Village, mixed gravel and trail paths, and accommodations for dogs and strollers.
Early season cross country meet with varsity divisions, a community 5K, and a free youth 1 Mile, featuring photo timing, awards, and on site food.
October 2026
Two days of mountain running in North Bend, WA, featuring a vertical kilometer, a 30k championship with prize money, a 10k, a double option, and a full-day adventure expo.
A community Half Marathon and 5K at Lake Wilderness Park with chip timing, medals, gravel trails, and proceeds benefiting The More We Love.
A last-one-standing backyard ultra where each completed loop adds $100 to a shared prize jar and the final payout is split 75% to the winner and 25% to the runner-up.
A 25K trail race at Snoqualmie Pass that runs through the Snoqualmie Tunnel to Annette Lake and back, with two aid stations and mandatory headlamps.
Two-day mountain running festival in North Bend, WA featuring a vertical kilometer, the Skyline 30k championship with 6,500+ feet gain, a 10k, expo and family activities.
A backyard ultra in downtown Tacoma with a 3.3 mile loop repeated hourly for up to 15 hours, totaling 45.5 miles for full completion.
Trail races on the Middle Fork and CCC trails in North Bend, WA, on October 10, 2026. Distances from 10k to 50k feature river valley scenery, aid stations, and some unbridged creek crossings.
Community 5K and 1K kids event at PLU Meadows with on site registration options and proceeds supporting local youth running needs.
A community event at Daybreak Star offering a chip-timed 5K trail run and a free 1.25 mile SpiritWalk to support culturally attuned care for Native people.
A 5k in Ravenna Park where participants run or walk wooded trails while watching for Bigfoot sightings, with in person, virtual and free kids options.
The 20th annual Carkeek 12 Hour at Carkeek Park features 12 and 6 hour loop races on a 1.93 mile course with costume prizes and proceeds benefiting local trails.
A costumed community event at Lincoln Park featuring a trail 5K, kids dashes, and a virtual shirt option to support South Seattle College Cooperative Preschools. Registration includes a Monster Dash shirt and the 5K includes a timed bib.
An evening team relay in Ten Trails where teams of one to three hunt and return six hidden ghosts in Civic Park; free registration, prizes for fast finish, best team name, and best costume.
November 2026
Trail races at Squak Mountain in Issaquah offering 7, 14 and 21 mile courses with aid stations, a long-sleeve race shirt and a finisher medal.