Trail Running calendar near Livermore 2025-2026

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..

Tackle the Monterey Trail Experience at Toro Park, a Spartan Trail through rolling golden hills and smooth singletrack from 10K to marathon. Enjoy weekend obstacle races and team entries for shared starts and group pricing.

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.

Skyline 50K is one of the oldest 50K ultras in the US, offering a scenic loop through East Bay Regional Parks from Lake Chabot Marina. First time ultrarunners and half marathoners are welcome, and the day ends with plant based post race foo..

Run the Redwood Summer Trail Run in Oakland on August 15, 2026, with distances from a kids dash to a rugged 50K through scenic Redwood Regional Park. Pre registered runners get a tee and all finishers receive a custom medal.

Run classic Bay Area trails at the 43rd Dick Collins Firetrails on September 26, 2026 at Lake Chabot Marina, with 100k, 50 mile and marathon distances and UTMB Index status. The 50 mile is also part of the Pacific USATF Grand Prix for added..

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.