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Trail Running Calendar near Downtown Seattle 2026-2027

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Explore the top trail runs near Downtown Seattle for 2026-2027! We've gathered 47 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

August 2026
Summer Spirit Run at Magnuson Park on August 29 offers 5k, 10k and 15k options plus a Kids Dash and an Obstacle Dash with eight obstacles.
September 2026
Point-to-point marathon and half marathon on the Palouse to Cascades Trail with net downhill profiles, USATF certification, shuttle support and chip timing.
Experience a flat out and back course through mossy evergreen forests along the Snoqualmie valley trail. Choose from four different distances starting at Tolt MacDonald Park in the town of Carnation.
Timed trail event at McCormick Forest Park on September 12, 2026, with 24 hour, 12 hour day, 12 hour night and 6 hour options on a 2.25 mile loop.
A community 5K fun run, walk and hike through Illahee Preserve in Bremerton held in September for National Recovery Month. Proceeds support the Salish Recovery Coalition and participants receive event swag and a finisher medallion.
A fall trail run at Bob's Corn and Pumpkin Farm featuring a 5k one-lap maze option and a 7k two-lap maze option on farm roads and paths.
USATF certified marathon and half in North Bend WA on September 13 2026 with an alternate mostly downhill rail trail course and about 1,000 feet net elevation drop.
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.
Two days of Spartan obstacle racing near Monroe WA at Meadow Wood Equestrian Center with Sprint 5 km, Super 10 km, Beast 21 km, kids races, a 4 hour Hurricane Heat and spectator access.
A fantasy themed 5K walk and run at Magnuson Park with mixed trail surfaces, Villain Zones, and a Heroes Village; costumes encouraged and leashed dogs and strollers welcome.
Trail run and walk at Discovery Park covering 2.8 miles with about 150 ft of elevation gain, meeting at the North Parking Lot and followed by Lucy's Bottle Shop.
October 2026
A two day trail running festival in North Bend WA with a steep Mt Si VK, a 30K mountain race with prize purse, a 10K, and a double challenge.
A mountain 30k in North Bend, Washington with over 6,500 feet of elevation gain, the Vert Running Series Championship, a $4,500 prize purse and a full festival weekend.
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 run at PLU Meadows Disc Golf Course offering a 1K kids run and a 5K. Proceeds support local youth running programs and a college scholarship.
30th Annual SpiritWalk & Warrior Run in Seattle offers a timed 5K and a free accessible 2K walk to raise funds for culturally attuned Native health services.
A cross country meet at Lower Woodland Park in Seattle featuring 6K and 8K championship races plus an untimed community 2K.
Where's Bigfoot 5k takes place in Seattle on October 17, 2026 with in person, virtual, and free untimed kid entries. The course is 3.1 miles and registration periods and fees vary by entry type.
Lord of the Hill in Monroe WA on October 17, 2026 is a Last Person Standing race of repeated 0.8 mile loops with progressively shorter lap times until one winner remains.
An annual October trail event at Carkeek Park offering 12-hour and 6-hour timed loop races on a 1.93 mile course with 436 feet gain per loop, plus a virtual option.
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