Fairfax
Trail Running Calendar near Fairfax 2026-2027
Explore the top trail runs near Fairfax for 2026-2027! We've gathered 50 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
March 2027
A three day trail running weekend in Marin County offering a point to point 100K plus single loop 50K and 28K that summit Loma Alta and Big Rock Ridge.
Multiple trail distances run through Redwood Regional Park on March 20, 2027 at Chabot Space & Science Center. Routes use East Ridge, West Ridge, Stream and Bridle trails and distances were measured with a Rolatape surveyor's wheel.
April 2027
Trail event in Walnut Creek on April 3, 2027 offering 50K, half marathon, 10K, 5K and a remote option, with part of fees supporting Save Mount Diablo.
May 2027
Trail running in the Stinson Beach and Muir Woods area with marathon, half marathon and 7 mile options. The event is organized by Enviro Sports and is tentatively scheduled for May 2027.
A race day in El Sobrante with a half marathon, 10K, 5K and a hiker division through the hills of Wilcat Canyon; registration windows and fees vary by distance.
June 2027
A historic 7.4 mile trail race from Mill Valley to Stinson Beach, known for steep stairs, a unique handicapping start system, and a limited field of about 1,500 runners.