Trail Running calendar near Calistoga 2026-2027

A map-based 5K and 10K in San Francisco where teams navigate checkpoints and answer multiple-choice questions, followed by refreshments 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 trail event at Granite Beach on August 23, 2026 offering 5K and 10K courses for runners and their dogs, with finisher medals and dog bandanas; aid stations provide drinks and gels and dogs have their own water.

A Spartan obstacle weekend at Mahon Ranch near Elk Grove features a Sprint 5 km with 20 obstacles, a Super 10 km with 25 obstacles and kids races, plus team entries, volunteer options and service member discounts.

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..

Experience the natural scenery of Mount Diablo State Park through a variety of trail races. Runners can select distances ranging from 4 miles to a 50K with spectacular views of the San Francisco Bay Area.

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.

Trail races on September 12, 2026 in Tilden and Wildcat Canyon near Berkeley, offering 10K, half, 35K and 50K with marked technical trails, aid stations every 5–7 miles, chip timing, and a cupless format.

Trail runs at Granite Beach on Folsom Lake with new 10 mile and 5K courses, aid stations, age group awards, a finisher beer glass and a postrace meal.

Rocky Ridge is a trail running event at Las Trampas Wilderness in San Ramon, California on September 19, 2026. It features a half marathon plus 10K and 5K courses with uphill trail sections and scenic vistas.

A community road and trail running event in downtown Healdsburg on September 19, 2026, featuring 10K and 3K courses and raising funds for the Healdsburg Kawanis. Group registration and packet pickup at Healdsburg Running Company are availab..

An annual September trail running event at Lake Chabot Marina offering 100k, 50 mile and marathon races with UTMB Index status and Pacific USATF Grand Prix inclusion for the 50 mile race.

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.

Experience a trail half marathon on San Bruno Mountain featuring 2,400 feet of elevation gain and stunning views. Enjoy a scenic route with 93 percent trail coverage followed by a post race meal and finishers medal.

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.

Granite Head Trails & Ales Trail Races feature 6.6-mile and 11.2-mile courses. Runners get a tech T-shirt and can enjoy post-race fajitas and a beer. The event is the final race in a local trail running series.

A 12.4 mile loop up to the Mount Diablo summit and back in Clayton, California, featuring about 4,000 feet of ascent and descent and a 5 hour cutoff. Entry includes a shuttle, raffle entry, and a unique finisher item.