Fairfield
Trail Running Calendar near Fairfield 2026-2027
Explore the top trail runs near Fairfield for 2026-2027! We've gathered 17 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
October 2026
Trail races on Mount Diablo in Walnut Creek on October 17, 2026 offering 30K, half marathon, 10K and 5K on hilly trails with possible mud and creek crossings.
Cross-country races at Radke Martinez Regional Shoreline on October 24, 2026 featuring three identical 4.1 mile races on grass, dirt, and path surfaces.
November 2026
The 40th annual Annadel Loop is a 6.45 mile trail race in Annadel State Park with staggered starts, awards for the top 13, a limited field, and published member and non member fees.
Monthly community hike with an optional trail run in Richmond, CA, organized by FIERCE Advocates with Moving Forward and Richmond Run Club on first Saturdays in 2026.
March 2027
A chip-timed 5K at Artesa Vineyards & Winery in Napa on March 7, 2027 that pairs a run or walk with wine tasting and Spanish-inspired architecture. Registration opens May 18, 2026 and packages include a shirt, collapsible wine glass, medal that serve..
April 2027
Trail running event near Mount Diablo on April 3, 2027 offering 50K, half marathon, 10K, 5K and remote options while supporting Save Mount Diablo.
Trail runs at Jack London State Historic Park offering Half Marathon, 5.5 Mile and 5K on marked courses with aid stations, limited parking, and a no headphones policy.
May 2027
A timed half marathon on May 8, 2027, from Quintessa Winery to Yountville with exclusive vineyard access, festive aid stations, and a finish-line Wine Village.
Trail runs at Skyline Wilderness Park offering 50K, 30K, 21K and 10K courses with substantial elevation, aid stations, camping options, and a cupless race policy.
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 100 mile point to point ultramarathon through the East Bay starting at California Memorial Stadium, featuring 18,000 feet of climbing and a 33 hour finish limit.