Trail Running calendar near Seattle 2026-2027

We have found 125 Trailruns within 80 miles of Seattle. See below where and when you can find the races.

Trail races in Deception Pass State Park featuring 50K and 25K courses over single track, coastal bluffs and forest, with aid stations, drop bags, marked trails and free official photos available for participants.

February 2027

Celebrate Valentine's Day with a community 5k in Black Diamond featuring unique two person team categories and a cross country style scoring system.

A 100 mile trail race on Orcas Island made of four 25 mile loops, about 26,000 ft of climbing, extensive aid station support, pacer and crew rules, and a Tower Club award for climbers who summit the Mt Constitution tower on every loop.

March 2027

A point-to-point 25K through the Chuckanut Mountains from Lost Lake Trailhead to Larrabee State Park, featuring runnable singletrack, some technical sections, chip timing, course GPX, race apparel, and a finishers medal.

A2 Physical Therapy's annual 5K at Titlow Park on March 28, 2026 raises funds for the Multiple Sclerosis Program and offers walking or running, live music, coffee, snacks and a raffle.

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