Trail Running calendar near Windsor 2025-2026

Tackle the Rim Rock 50 Mile Trail Challenge in Napa for a rugged, scenic test across oak forests and exposed ridgelines. Choose solo or two person relay and take on two big loops through Skyline Wilderness Park.

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.

Tackle scenic, technical trails in Joaquin Miller and Redwood parks on May 30, 2026, with distances from 8K to 50K plus a free kids dash. Costume contest, stocked aid stations, and big climbs make this a festive, challenging trail day.

Hit the scenic trails of Point Pinole on May 30 for Nitro Trail 2026, with half marathon, 10K and 5K distances plus a remote runner option. Enjoy coastal views and support East Bay Regional Parks with every step.

Run scenic ridgeline trails with ocean views and a Red Hill summit through ferns and redwoods at Sonoma Coast Trail Runs. Choose from 50K, marathon, 30K or half marathon for a challenging day on the Sonoma coast.

Bay Area 100 is a scenic yet demanding 100 mile point to point ultramarathon from Berkeley to Oakland across ridgelines, redwood forest and lakes with about 18,000 feet of climbing. Limited to 150 runners for an intimate challenge.

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.

The SF Half Day will take place in Presidio of San Francisco on Saturday 13 June 2026. You can run between 3 and 12 kilometers.

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 forest trails and camp under the redwoods at the Mendocino Running Festival held at Mendocino Woodlands Park. Choose timed formats or distances from a half marathon to a 10K, then relax with food, music, yoga and evening festivities.

Dick Collins Firetrails at Lake Chabot Marina features 100k, 50 mile, marathon and 30k races across scenic East Bay park trails. Challenging courses, solid aid and sweeping views make it a fall must for trail runners.