Trail Running calendar near Sacramento 2026-2027

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..

Trail races at Mammoth Bar OHV Area in Auburn State Recreation Area on September 6, 2026. Options include a 13.1 mile half marathon and a 6.2 mile 10K, each with notable elevation gain and staffed aid stations.

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.

A multi-day ultrarunning event in Auburn, California (Sept 18-21, 2026) offering timed solo races and team relays on a looped course, staffed aid stations, milestone buckles, on-site amenities, and family cheer zones.

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 on a 3.3 mile loop at Skyline Wilderness Park in Napa supporting the Pheo Para Alliance. Participants can do one to ten loops with alternating loop directions each hour and on site aid and awards.

Trail races along the Western States Trail near Auburn, California on September 27, 2026. Distances include a half marathon, 12K and 5K with electronic chip timing and finisher medals and t shirts.

A self-guided point-to-point 50K from South Yuba Campground to Bear Valley in Nevada City, CA held during October 2026. Runners complete the course in one continuous effort and self-report results to receive a finisher award and ranking.

Trail runs near Bear Valley and Lake Spaulding with a 50K and a 24 mile option. The 50K includes a summit loop with about 5,700 ft of gain, rocky sections on Signal Peak OHV Road, cupless aid stations, and finisher medals.

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.

Trail races in Auburn, California along the American River Canyon rim with live music and free cider. Distances include a 50K, a half marathon and a 5 mile course with aid stations on the longer routes.

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.