Trail Running calendar near Walnut Creek 2026-2027

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..

Run through giant redwoods and along coastal-influenced trails at Henry Cowell State Park. Choose from 10K, half marathon, and 30K distances on a course featuring river crossings and scenic ridges. Aid stations are provided approximately ev..

Navigate through historic San Francisco neighborhoods using a custom map at this 5K or 10K adventure event. Explore Fillmore and Japantown in teams or as an individual to find checkpoints and solve multiple choice questions.

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..

Experience a scenic trail run around Angel Island State Park with views of the San Francisco skyline and Golden Gate Bridge. Choose between 10K and half marathon distances on this hilly island loop trail.

Location and Course The event takes place at Huddart Park in Woodside, California. The trails pass through Huddart Park, King's Mountain, and Bear Gulch, featuring redwoods and ferns. Distances are measured with a surveyor's measuring wheel..

Explore the gentle trails of Pinto Lake County Park at the Apple City 5k. This inaugural event celebrates the agricultural roots of Watsonville's Pajaro Valley. The race supports local students, with half of its proceeds going to the Pajaro..

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..

The Berkeley Trail Adventure offers four distances on the scenic trails of Tilden Regional Park. Runners can expect shaded paths, open views, and fully stocked aid stations. It's a cupless event where all finishers receive a medal.

The Stevens Creek Striders Reservoir Run offers a Half Marathon, 11K, and a family-friendly Lollipop Loop on scenic trails. It's a USATF-sanctioned event with capped participation and post-race BBQ. The run supports local trails and include..

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 carries on a historic ultrarunning tradition at Lake Chabot. Runners can choose from three classic distances: a 100k, a 50 miler, and a marathon. It's a UTMB Index event with firm time limits due to park regulati..

Explore the shaded redwood groves and challenging, flowy singletrack of Sanborn County Park. This trail event on September 27, 2026, offers 10k, half marathon, and 50k distances through the Santa Cruz Mountains.

Run by the Sea returns for its tenth year at Wilder Ranch State Park. This coastal run on flat dirt trails offers a half marathon, a 12K, and a 4K run/walk. The event supports local youth and trail stewardship programs.

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 & 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.

The inaugural Sonoma Fall Classic offers trail races from marathon to 100 miles around Lake Sonoma in California's wine country. Runners can tackle legendary climbs and scenic singletrack in this October event. Free camping is available nea..

Event Overview The Diablo Summit Stomp is a trail race held on October 17, 2026, in Walnut Creek. The event offers several distances run on dirt trails. Distances and Courses Participants can choose from one of four courses: 30K Half Marat..