Fairfield
Trail Running Calendar near Fairfield 2026-2027
Explore the top trail runs near Fairfield for 2026-2027! We've gathered 20 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
Monthly community hike with an optional trail run in Richmond, organized by FIERCE Advocates and local partners on first Saturdays in 2026.
Experience the trails of China Camp State Park with a selection of distances including a 5K 10K and Half Marathon. Participants enjoy a post race festival with beer steins custom medals and local snacks.
An annual stadium stair climb and memorial walk at UC Davis Health Stadium honoring 9/11 first responders, with proceeds supporting the UC Davis Police Emergency Scholarship.
A community ultramarathon and hike at Skyline Wilderness Park in Napa, CA, featuring a 3.3-mile loop repeated up to ten times in an hourly format to raise funds for the Pheo Para Alliance.
October 2026
Multi-day event at McNear’s Beach Park in San Rafael featuring an Olympic triathlon, relay, a kids triathlon, a trail half marathon, and a combined challenge.
A 12.4 mile loop from Mitchell Canyon to the Mount Diablo summit and back in Clayton, CA, featuring about 4,000 feet of ascent and a five hour cutoff.
Trail races of 5K, 10K, half marathon and 35K around San Pablo Reservoir on EBMUD trails, with chip timing, stocked aid stations, a cupless policy, and a 300-runner capacity.
Trail races on Mount Diablo near Walnut Creek on October 17, 2026 offering 30K, Half Marathon, 10K and 5K with possible mud and creek crossings.
A cross-country meet at Radke Martinez Regional Shoreline on October 24, 2026 with three 4.1 mi races over grass, dirt, and path terrain.
November 2026
April 2027
Trail event at Mount Diablo on April 3, 2027 offering 50K, half marathon (including a hiker option), 10K and 5K with proceeds benefiting Save Mount Diablo.
May 2027
A 13.1 mile point to point half marathon through Napa Valley vineyards, mostly on private winery roads, finishing in Yountville's Wine Village.
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