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Trail Running Calendar near Sammamish 2026-2027

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Explore the top trail runs near Sammamish for 2026-2027! We've gathered 44 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

Trail Running Calendar United States
June 2027
Jun
5
Sa

Green River Marathon

Trail Run Half Marathon Marathon 50 km
Annual event on June 5, 2027 offering marathon, half marathon, 50K and relay options with on course aid and published results.
Jun
12
Sa

We Out Here Trail Festival

Trail Run 2 mi 4 mi 6 mi
Trail festival at St. Edwards State Park near Kirkland with looped courses, medals, festival activities, reusable cups, and an inclusive focus for first time trail runners.
Jun
26
Sa

SISU 24 PNW

Trail Run Backyard Ultra
A 24 hours choose your own adventure trail event near Mount Rainier with six marked trails, optional side quests, camping at Camp Sheppard, and a points-based system.
August 2027
Aug
14
Sa

One Step Closer

Backyard Ultra
Looped endurance races at Lincoln Park on August 14, 2027 with 18 hour, 12 hour, 6 hour and 3 hour options plus a 30 minute kids loop and team competition.
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