Trail Running calendar near Clarksburg 2026-2027

The Cool Summer Night Run will take place in Cool on Saturday 6 June 2026. You can run 10 kilometers.

A trail event in Castro Valley on June 7, 2026 offering a chip timed half marathon and 5K with on-course water, first aid support, guaranteed t-shirts for early registrants, and age division awards.

Experience a point to point 100 mile ultramarathon from UC Berkeley to Oakland. This trail race features 18,000 feet of elevation gain through redwood forests and scenic ridgelines with expansive California views.

The Cool Moon Trail Races offer six distances from 5K to 100K on scenic, well-marked loops near Cool, California. The event spans two days, with live tracking and multiple aid stations on course. All finishers receive a medal and shirt, wit..

Run 100 miles on a looped course through Northern California trails. The event has a 37-hour cutoff and multiple aid stations. Finishers earn a handcrafted silver buckle.

Experience the scenic trails of Lagoon Valley Park at The Pena Passage. Choose from 30K, 10K, or 5K distances featuring rolling hills and oak groves in a natural setting.

Live and virtual 5K, 10K and half marathon at Lake Chabot Regional Park in Castro Valley, June 26 to 29, 2026. Courses mix paved and trail sections with aid stations; live participants receive a shirt, handcrafted woodallion and beer sample..

The 14th Bay 2 Bankers offers a unique team adventure through San Francisco. Navigate a 5K or 10K course from Ghirardelli Square using a custom map. Teams of up to five can enjoy post-run refreshments.

Experience the technical trails of Mt. Tamalpais and Muir Woods on this scenic coastal run. Choose from 10K, Half Marathon, or 30K distances featuring redwood forests and Pacific Ocean views.

Tackle the trails of Auburn, CA in this second leg of a 3-part trail series. Choose from a 10.5 or 5.9 mile course through the American River Canyon, featuring challenging hills. Finish with a tech shirt, custom medal, and a celebratory bee..

Experience the coastal beauty of the Marin Headlands with trail races ranging from 8K to 50K. Run past historic landmarks and enjoy panoramic views of the Golden Gate Bridge and the Pacific Ocean.

One of the oldest 50k races in the US, the Skyline 50k Endurance Run loops through the scenic East Bay Regional Parks. Runners enjoy strong community support from local running groups and a festive finish at Lake Chabot Marina.

Experience a high altitude alpine adventure in the High Sierra of Northern California. Run through scenic wilderness loops near Lake Tahoe with distances ranging from 5.6 miles to a 50K ultramarathon.

Bear Creek is a trail running event in Lafayette's Briones Regional Park with half marathon, 10K, and 5K distances. The courses feature hills, scenic views, and a rewarding final downhill mile. All finishers receive a custom medal and shirt..

A classic 50K trail ultramarathon in Marin County's stunning Headlands, featuring iconic trails and challenging terrain. The single-loop course offers spectacular coastal views and finishes at Santos Meadow. It's part of the USATFPA Grand P..

Experience the beauty of Oakland's Redwood Regional Park through a variety of trail distances from 5 miles to 50K. Run among tall redwoods on a well marked course with spectacular ridge views and fully stocked aid stations.

Navigate through historic San Francisco neighborhoods and parks in this unique 5K or 10K challenge. Use a custom map to find checkpoints and solve riddles individually or in teams of up to five people.

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..

Run the scenic trails around Jenkinson Lake in California's El Dorado National Forest. This summer event offers seven distances, from a 5K to a 50K ultramarathon. All finishers receive a medal, and aid stations support runners along the way..

Join this unique trail run at Folsom Lake SRA where you can compete alone or with your dog. Features 10K and 5K courses with specialized awards for different dog weight classes and finisher medals for all.