Trail Running calendar near Glen Ellen 2026-2027

A single loop 50K ultramarathon in Muir Beach, California on Saturday, August 15, 2026. The course uses notable Marin trails, includes about 6500 feet of elevation gain, and features coastal and Bay Area views.

An orienteering style 5K and 10K in San Francisco where solo runners or teams of up to five use a custom map to visit up to 30 checkpoints, answer simple multiple choice questions, and enjoy refreshments at the finish.

Tackle the legendary Double Dipsea, a 13.7-mile out-and-back on the historic Dipsea Trail from Stinson Beach. This unique race features a handicapped start, putting all runners on a single-track course of constant passing. Experience the hi..

Trail run in Huddart Park near Woodside, California on August 30, 2026 offering distances from 8K to 50K plus a free kids 50 yard dash. Courses run on single track and dirt roads with aid stations every 5 to 9 miles.

Diablo Trail Run on September 6, 2026 in Clayton CA offers distances from a 4 mile Mitchell Canyon course to a 50K, plus a free kids 50 yard dash for age six and younger. Courses use dirt roads and single track with aid stations every 3 to..

Trail races on September 12, 2026 in Tilden Regional Park and Wildcat Canyon offering 50K, 35K, half marathon and 10K courses with marked trails, aid stations every five to seven miles, and a cupless format requiring reusable cups or bottle..

Explore scenic trails along Folsom Lake at the Gold Rush Growler Trail Runs. Choose between a 10-mile or 5K course starting at Granite Beach. Finish with a custom beer glass, a local IPA, and a hearty post-race meal.

The Rocky Ridge 2026 offers a challenging half marathon trail run in the Las Trampas Wilderness, plus 10K and 5K options. It's the finale for the Ultra Half Marathon Series and supports the East Bay Regional Parks Campership Program. Partic..

The Dick Collins Firetrails offers three classic trail races in California's East Bay. Choose from a 100k, 50-mile, or marathon distance on historic trails around Lake Chabot. All finishers receive unique items, and the races are qualifiers..

Run the 39th Ruth Anderson Memorial Endurance Run on October 10, 2026 in San Francisco. Choose 100 km, 50 miles, or 50 km on a scenic paved loop around Lake Merced with chip timing and certified 50K and 50 mile courses.

Granite Head Trails and Ales offers two scenic fall trail runs at Granite Beach, California. Runners will encounter dirt trails, granite boulders, and a sandy beach along Folsom Lake. All finishers receive a tech shirt, medal, and post-race..

A multi-distance trail running festival in Healdsburg during harvest, combining the Lake Sonoma 50 with a new 100 mile race, a trail marathon, and relay options on nearby trails.

A trail running event on Mount Diablo in Walnut Creek. Runners can choose from a 30K, half marathon, 10K, or 5K distance on scenic trails. Walkers are welcome, and conditions may include mud and creek crossings.

A Halloween-themed running event at Hellyer County Park offering distances from a kid's 50 yd dash to a certified marathon, with costume prizes, aid stations every 2-4 miles, and cupless hydration policy.

A trail fundraiser in Joaquin Miller Park offering a 5 km trail race and a 1 mile fun run/walk to support Oakland Tech PTSA and the school cross country program; donations are tax-deductible.

Event Details The Rio Del Lago 100 Mile Endurance Run is a trail race held on Saturday, November 7, 2026, starting at Beal's Point in Folsom Lake State Recreation Area, within the Sierra Foothills of California. Course Information The 100-m..

Mermaid Trail Run at Huddart Park in Woodside on November 7, 2026 features multiple trail distances, a timed 6 Hour challenge and a youth dash. The course is hilly, parking has a cash fee and a pancake breakfast follows the race.

A multi-distance trail event around Lake Chabot in Castro Valley on November 7, 2026, offering 8K to 50K options plus a free kids' dash, marked trails, regular aid stations, and a cupless policy.

This November trail run takes on the iconic slopes of Mt. Tamalpais, starting at Stinson Beach. Runners can choose from four distances, from a 10K to a 50K ultramarathon, all featuring significant climbs and views. The event includes chip t..

A Thanksgiving morning event in San Jose offering 5K, 10K, a USATF certified half marathon, age-group races and a free kids' 50-yard dash. The course is mostly asphalt, aid stations appear every 2 to 4 miles, and the event is cupless.