Trail Running calendar near Lake Sonoma 2026-2027

An endurance event at Point Pinole Regional Shoreline with 12 hour, 6 hour and 3 hour timed races on a 3.37 mile loop. Individuals and teams of two or three share laps and entry includes an all day picnic.

Trail races of 8K, half marathon, 30K and 50K run from Rodeo Beach through the Marin Headlands with coastal singletrack and ocean views. The event is limited to 350 runners and the 50K has an 8.5 hour time limit.

Test your endurance at Skyline Wilderness Park in this time based trail run where you complete as many laps as possible in three, six, or twelve hours. Enjoy rolling hills and scenic singletrack in the heart of Napa.

A 50K single loop ultramarathon around the Marin Headlands with about 6,500 feet of elevation gain, varied trail and fire road terrain, and start and finish at Santos Meadows. A Kids One Mile Challenge is also offered.

Navigate through historic San Francisco neighborhoods and parks in this unique 5K or 10K challenge. Use a custom map to find checkpoints and solve riddles individually or in teams of up to five people.

The Double Dipsea is a longstanding annual 13.7 mile trail race from Stinson Beach to Mill Valley and back, run on mostly single track with many stairs and handicapped starts that create frequent passing among runners.

A scenic loop trail race around Angel Island with a single-loop 10K and a half marathon that runs the loop twice; ferry transport is required and included in race pricing, and the field is limited to 400 participants.

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.

A trail running festival at Mendocino Woodlands Park with a looped single-track course through ancient redwoods, offering a half marathon, 10K and timed 6 hour and 12 hour formats, plus on-site camping and weekend food options.

Trail races in Tilden and Wildcat Canyon near Berkeley with 10K, half marathon, 35K and 50K options, aid stations every 5 to 7 miles, a cupless format, and a 350 runner capacity.

JP's Backyard Ultra/Hike is a final edition event in Napa's Skyline Wilderness Park. Participants run or hike a 3.3-mile loop, choosing their own distance up to 33 miles. This free event is a fundraiser, with a suggested donation supporting..

Test your endurance at Lake Merced in San Francisco with a scenic 4.5 mile loop course. Choose between a standard run or tackle ultra marathon distances including the 50K and 50 mile events.

A multi-distance trail event at Lake Sonoma on October 17-18, 2026 offering 100 Mile, 50 Mile, marathon and 4-person relays on singletrack with substantial elevation and on-site camping.

Trail marathon, half marathon and 10K in Bothe-Napa Valley State Park on October 24, 2026, limited to 300 runners. Single-track course with hills, streams and rocky sections; orange ribbon markings, one aid station, no headphones allowed.

Mt. Tam Trail Run offers 10K, half, 30K and 50K trail races at Mt. Tamalpais State Park with technical singletrack, chip timing, cupless aid stations, and a 500 runner capacity.

Quad Dipsea is a 28.4 miles trail event in Mill Valley, California, with about 9,000 feet of elevation gain. The route is an out and back to Stinson Beach repeated twice and includes aid stations at Cardiac Hill, Stinson Beach, and Old Mill..

Escape the wrath of Krampus with this themed cross-country run in San Francisco or from anywhere. Choose from 5K, 10K, or a nine-mile course. All finishers get unique Krampus themed swag, including a woodallion and beer stein.

Peacock Gap Trail Run on December 5, 2026 at China Camp State Park features 10K, half marathon and 30K trail races with coastal views and varied single track terrain. The event is cupless so runners must carry their own bottle or reusable c..

The Hunter S. Thompson Fear & Loathing will take place in San Francisco on Sunday 6 December 2026. You can run between 50 and 50 miles.

A trail running event in San Francisco on January 23-24, 2027, offering 15K, 25K, 50K and 50 mile options on soft, hilly trails. The course travels through the Marin Headlands and crosses the Golden Gate Bridge with coastal views.