Trail Running calendar near Tracy 2025-2026

Tackle the iconic Miwok 100K through the Marin Headlands on May 2, 2026, where redwoods, ridgelines, and coastal views await. Limited to 400 runners, this supported trail ultramarathon blends rugged challenge with community and sustainabili..

Run from Stinson Beach into the ancient redwoods of Muir Woods on a scenic, rugged course with ladders, staircases, streams and summit views. Choose marathon, half marathon or 7 mile on May 9, 2026; field limited to 300 runners.

Run scenic single track and dirt roads around Lake Anza in Tilden Regional Park, Berkeley, with distances from a family friendly kids dash to a tough 50K. Pre registered runners get shirts, all finishers earn custom medals and aid stations..

Trailquake 2026 in Saratoga on May 10 delivers scenic, climbing single track trails with half marathon, 10K and 5K options for runners and walkers of all abilities. Presented by Brazen Racing with shirts and awards for finishers.

Explore Napa's Skyline Wilderness Park on May 16 with 50K, 30K, half marathon and 10K trail runs through rim rock climbs and panoramic views of Mount Diablo, Mount Tam and Mount Saint Helena. Aid stations and on course support keep you movi..

Celebrate the 15th anniversary of Run for Amma, a charity trail run at Skyline Ridge supporting UCSF cancer research. Choose from challenging 50K and 30K routes or a scenic 10K, and enjoy community support from volunteers and local clubs.

Rimrock 50 Mile Trail Challenge in Napa invites solo runners and two person relay teams to tackle two scenic loops through Skyline Wilderness Park and nearby preserves. Expect staffed aid stations, on site camping, and hearty post race food..

Wildcat 2026 on May 16 in El Sobrante offers scenic 360 degree views of the Bay Area with race choices from 5K to half marathon or a remote option. Join the fun and help support the East Bay Regional Parks Campership Program.

Run scenic paved trails in Roseville on May 16, 2026 at the Wild Rose Half Marathon or join the fun 5K run or walk, finishing at Moksa Barrel House. All finishers get a medal and drink ticket and runners choose a tech shirt or BOCO hat.

Join Nitro Trail 2026 at Point Pinole Regional Shoreline on May 30, 2026 for scenic trail races including half marathon, 10K, 5K and a remote runner option. A separate hiker start in the half welcomes slower paces and a relaxed finish.

Tackle scenic single track through Joaquin Miller and Redwood parks with distances from 8K to 50K and a kid's dash. Marked routes, steep climbs and stocked aid stations every three to six miles make this a challenging and well supported tra..

Run Spartan Trail at Toro Park in Salinas on May 31, where rolling golden hills and smooth trails set the stage for marathon, half and 10K trail races. Enjoy scenic singletrack, a lively community vibe and team and service member discounts.

Run the 42nd annual Lake Chabot Trail Challenge on June 7, 2026 in Castro Valley, with a scenic hilly half marathon or a 5K featuring ridge line views of Mt Diablo and the Bay. Chip timed races, finisher medals, and on site packet pick up.

Bay Area 100 is a 100 mile point to point ultramarathon from UC Berkeley to Skyline High in Oakland, tracing East Bay ridgelines, redwood forest and lake shore. Limited to 150 runners with a 33 hour cutoff for a true endurance challenge.

On July 11 join the San Lorenzo River Trail Run in Santa Cruz and run through coastal redwoods and scenic river crossings. Distances range from 10K to 50K, pre registered runners get T shirts and all finishers earn a custom medal.

Tackle scenic East Bay trails in the historic Skyline 50K or choose a half marathon around Lake Chabot Marina in Castro Valley. Finish with a plant based BBQ and beer while families enjoy the festive atmosphere.

Run scenic shoreline and single track trails at Granite Beach for the Gold Rush Growler, with new 2026 courses and options of 10 miles or a 5K. Every finisher gets a beer glass and a cold local IPA for ages 21 and over.

Experience classic East Bay singletrack at Dick Collins Firetrails in Castro Valley, with 100k, 50 mile, marathon and 30k options across scenic ridges and regional parkland. Friendly aid stations, stunning views and a lively finish atmosphe..

Join the 39th Ruth Anderson Memorial Endurance Run in San Francisco on October 10, 2026. Run scenic loops around Lake Merced on a certified course with 50k and 50 mile options and aid stations for a memorable autumn ultramarathon.