Trail Running calendar near Lake Sonoma 2026-2027

A charitable walk and run at Howarth Park in Santa Rosa supporting Dogwood Animal Rescue with an in-park celebration and a virtual option that includes a mailed race packet and bandana.

Map based 5K and 10K adventure starting at Ghirardelli Square. Teams of one to five navigate custom maps to tag checkpoints, then gather afterward for snacks and drinks in a rain or shine event.

A monthly outdoor meetup in Richmond combining a community hike with an optional trail run, organized by FIERCE Advocates with Moving Forward and Richmond Run Club. Sessions include route details posted before each date and free parking.

Trail races of 10K, half marathon and 30K on Mt. Tam and through Muir Woods, featuring steep climbs, technical single-track and ocean views near Stinson Beach.

Timed trail races at Point Pinole on July 25, 2026 offer 12 hour, 6 hour and 3 hour formats on a 3.37 mile loop with shoreline views and eucalyptus groves. Solo runners and two or three person teams are accepted, and entry includes an all d..

A trail race in the Marin Headlands with 8K, half, 30K and 50K options along coastal single-track and fire roads, marked courses, cupless aid stations, and a 350 runner capacity.

A time based trail event at Skyline Wilderness Park in Napa on August 8, 2026 where runners cover as much distance as possible in three, six, or twelve hour formats. Main loops are 4.16 miles with roughly 815 feet of elevation per lap; the..

A 50K ultramarathon in Marin County on August 15, 2026, running iconic Coastal, Miwok, Matt Davis and Dipsea trails with about 6,600 feet of elevation gain. Part of the USATF PA Grand Prix and offering a $10,000 podium purse.

A five kilometer trail run along the Lands End Trail in San Francisco with views of the Golden Gate and the Pacific Ocean. The event lists a $10 entry fee, awards finisher ribbons, and requests no headphones or pets on course.

A map navigation event in Fillmore and Japantown where solo runners or teams of up to five use a 1:7500 custom map to find checkpoints on 5K or 10K courses, then enjoy snacks and socializing at the finish.

An annual 13.7 mile out and back on the Dipsea Trail from Stinson Beach to Mill Valley, run as a handicapped race with head starts for most divisions. The 2026 edition is the 56th running.

A hilly loop race around Angel Island on August 29, 2026 offering a Half Marathon and a 10K, with ferry access included in entry prices. The field is limited to 400 participants and headphones are prohibited for safety.

A steep 4.75 mile up and down run, hike, or walk on San Anselmo's Bald Hill that finishes downtown with live music and a t shirt. The third annual event benefits local nonprofits and includes town endorsement.

A PA/USATF cross country race of 3.4 miles at Spring Lake Regional Park in Santa Rosa on August 30, 2026. The 33rd annual Empire Open features rugged dirt trails, three races including a masters division, and a $1,500 prize purse for USATF..

A 6.45 miles trail race in Annadel State Park organized by the Empire Runners Club, held in early September with staggered age and gender starts, limited to 100 runners and awards for the top 13 finishers.

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 weekend running festival in Mendocino Woodlands Park with trail races including a half marathon, 10K and timed 6 and 12 hour events. The event combines looped single track trails, camping, meals and live music.

Trail races at Tilden Regional Park in Berkeley offering 50K, 35K, half marathon and 10K with scenic bay views, aid stations every 5–7 miles, cupless stations, and awards for finishers and age groups.

The 51st Fitch Mountain Footrace in Healdsburg features 10K and 3K courses through downtown, neighborhoods and along the Russian River. The event raises funds for Corazón Healdsburg and a kids running team.

A community ultramarathon and hike at Skyline Wilderness Park in Napa, CA, featuring a 3.3-mile loop repeated up to ten times in an hourly format to raise funds for the Pheo Para Alliance.