Trail Running calendar near Lake Sonoma 2026-2027

Trail distances from 5K to 35K around San Pablo Reservoir on EBMUD trails, with marked single-track, cupless aid stations, chip timing, and a 300 runner capacity.

A multi-distance trail event at Lake Sonoma featuring 100 mile, 50 mile, marathon and 4-person relays, with extensive singletrack, lake views, on-site camping, designated aid stations, and crew access at several points.

A trail race in Bothe-Napa Valley State Park on October 24, 2026 offering Marathon, Half Marathon, 10K and 5K. The single-track course features hills, stream crossings and narrow sections, and the field is limited to 300 runners.

A women focused trail half marathon in the Marin Headlands covering 13.6 miles with 2,156 feet of climbing, coastal ridgelines and views of the Pacific and Golden Gate Bridge. The event offers training plans, shuttles, childcare grants and..

Trail races around Mt. Tam in Stinson Beach, CA offer 10K, half marathon, 30K and a 50K with aid stations, finisher medals and a prize purse for the 50K. The event is organized by Inside Trail Racing and has a 500 runner capacity.

A 28.4 mile trail event in Mill Valley featuring steep stairs, coastal and forest trails out to Stinson Beach. The Dipsea Trail is run out and back then repeated for a total of four laps with on-course aid stations.

A seasonal cross country event in San Francisco on 12/6/2026 with live and virtual options. Distances include a 5K, 10K, and a nine mile course; all entrants receive race swag and there is a pre race bib and shirt pickup with Brewfest.

Peacock Gap Trail Run at China Camp State Park on December 5, 2026 offers 10K, half and 30K trail courses with marked single track and fire roads, chip timing, aid stations, and a cupless water policy.

An urban single-loop ultra from Twin Peaks in San Francisco offering 50K and 50 mile options, informal aid from volunteers, a mile 25 cutoff for the 50 mile, and support for the Shoes For Runners charity.

Experience the magic of the Golden Gate Bridge and the Marin Headlands. This Spartan Trail event offers distances from 15k to 50 miles with panoramic mountain and sea views.

Experience the coastal beauty of the Marin Headlands at the Golden Gate Trail Run. Choose from distances ranging from a 50K trail race to a fun kids dash with views of the Golden Gate Bridge and San Francisco.

Experience a trail run across the forest and hills of Angel Island with views of San Francisco and the Golden Gate. Choose from multiple race distances including a youth dash and enjoy a picnic at Ayala Cove.

A three day trail running weekend in Marin County offering a point to point 100K plus single loop 50K and 28K that summit Loma Alta and Big Rock Ridge.

A 50K trail race on Northern California’s Mendocino Coast, starting at Big River State Beach and passing river, ocean, redwood and waterfall scenery. Races are listed in April with recent dates including 2025 and 2027.

A timed half marathon through eight Napa Valley wine estates finishing in Yountville. The event includes a finish line Wine Village with live music and complimentary wine tastings.

A community trail run and hike on May 8, 2027 at the Point Arena and Stornetta Lands, co-hosted by ACORN and Pacific Community Charter School. Proceeds support the Students Protecting the Coast environmental education program.

Trail runs at Skyline Wilderness Park in Napa on May 15, 2027 offer four distances from 10K through 50K on reworked trails with significant elevation. Aid stations are staffed, the event is cupless, and camping is available through the park..

A multi-loop trail event in Napa that uses Skyline Wilderness Park and Suscol Headwaters. Options include an approximately 50 mile solo route and a one-loop ~25 mile course, with cupless aid stations and limited crew and pacer access.