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Trail Running Calendar near Snohomish 2026-2027

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Explore the top trail runs near Snohomish for 2026-2027! We've gathered 35 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 two-day Spartan obstacle race in Monroe, Washington featuring Sprint, Super, Beast, kids races, a 4 hour heat, and spectator options.
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.
A community trail run and walk for queer women, trans and non-binary participants at Discovery Park with post-event refreshments and donation based ticketing.
A community celebration at Osprey Park with a scenic 5K trail run and a 1 mile Fin Walk along the Sultan River, highlighting Skykomish River Valley heritage.
October 2026
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 fall cross country meet at Lower Woodland Park with a women's 6K, men's 8K and a community 2K, open to teams and individual entrants.
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.
Experience a flat loop course through Osprey Park in Sultan with options for a marathon or timed runs of three and six hours along the Sultan River.
A Last Person Standing hill loop in Lord Hill Regional Park with a 0.8 mile loop, shrinking lap times, medieval theme, custom banners and prizes for the final finisher.
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.
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.
Experience the 17th annual Spooky 10K Trail Race in historic Port Gamble featuring a costume contest and a scenic route through single track trails and dirt roads.
Trail races at Cougar Mountain Regional Wildland Park near Seattle offering 5k, 7.6 mile, 19.5 mile and 50k courses through forested single track, rolling hills and marshes. Proceeds support King County Parks.
November 2026
Final race of the Evergreen season at Grand Ridge Park offering 5 Mile, Half, Full and 50K on forested looped courses with notable elevation and cupless aid stations.
Trail running at Carkeek Park in Seattle with 5k and 10k forest courses featuring varied trail widths and rolling to steep sections. The 10k is two laps of the 5k and includes substantial climb.
Trail races at Ravenna Park on November 21, 2026 with 4k, 8k and 12k options on a 4.1 km forest loop featuring moderate climbs and an aid station offering water and snacks.
A marathon and half marathon on the Kirkland Corridor Course on November 26, 2026 using a short out and back layout with on-site parking and aid at the start.
Soaring Eagle Park Turkey Trot in Sammamish features USATF sanctioned timed road and trail races from a 2k kids run to 10 mile with finisher shirts and medallions.
December 2026
Run through the scenic forests of the Redmond Watershed Preserve in a festive 5 mile or half marathon trail race featuring smooth trails and rolling hills.
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