Trail Running calendar near Rio Linda 2025-2026

Diablo Trail Run takes place at Mount Diablo State Park’s Mitchell Canyon Trailhead in Clayton, CA. The event offers multiple distances: 4 miles, 10 miles, Half Marathon, Marathon, 50K, and a Kid’s Run. The 4-mile course is relatively flat and fast within Mitchell Canyon, while the longer races rise..

Skybreaker Racing’s Mammoth Bar Trail Runs take place in the Mammoth Bar OHV Area within the Auburn State Recreation Area, near Auburn, California. The event offers three distances: Half Marathon, 10K, and 5K, designed for a high-vertical, rugged trail experience. Participants can expect steep climb..

Garin Park XC Challenge 2025, held at Garin/Dry Creek Pioneer Regional Parks on Garin Avenue in Hayward, California, is a 5K cross-country race described as a tough yet scenic run along the Garin Park ridge. Now in its 21st year, the event is part of the Pacific Association of USA Track & Field Cros..

Berkeley Trail Adventure is an Inside Trail Racing event set in Berkeley, CA, spanning Tilden Regional Park and Wildcat Canyon. Distances offered are 50K (31 miles), 35K (21.6 miles), half marathon (13 miles), and 10K. The course blends technical dirt trails and non-technical fire roads, with about..

The Gold Rush Growler Trail Runs, held at Granite Beach in Folsom Lake State Recreation Area, feature scenic 10-mile and 5K trail races along shoreline and single-track trails. The 10-mile course includes diverse terrain with paved park roads, secret trails, and notable landmarks like Oak Point, Dot..

The Rocky Ridge Trail Half Marathon is a challenging trail race held in the scenic Las Trampas Wilderness near San Ramon, California. Scheduled for September 20, 2025, the event features a demanding half marathon known for its tough hills and breathtaking views, offering runners a unique wilderness..

Rebels XC Challenge is a cross-country running meet held in Carmichael, California, at 6700 Tarshes Drive. The event is scheduled for September 20, 2025, and offers three divisions: Women’s Race, Masters Men, and Open Men. Distances are not listed on the page, and course specifics aren’t described,..

The Dick Collins Firetrails will take place in Castro Valley from Saturday 27 September 2025 to Sunday 28 September 2025. You can run between 42 and 100 kilometers.

Sunset & Cider Trail Races take place in Auburn, California, at Ponderosa Cider Co. The event offers 50K, 13.1-mile, and 5-mile trail distances. The 50K includes two out-and-back segments on the American River with runnable single-track and about 3,900 feet of climbing, aided by four stations.The 13..

JP's Backyard Ultra/Hike is a grassroots ultramarathon and hike held at Skyline Wilderness Park in Napa, California. In its third year, the event features a 3.3-mile loop with 550+ feet of climbing through rocky and shaded trails. Runners and hikers may do 1 to 10 loops, starting together on the hou..

The Auburn Half Marathon, held in Auburn, California—known as the Endurance Capital of the World™—offers trail running on the scenic Western States Trail. The event features a half marathon, 12K, and 5K distances, all starting at Overlook Park and winding through Auburn State Recreation Area, includ..

Reservoir Dogs Trail Run, held in Orinda, CA on October 4, 2025, features three distances—10K, Half Marathon, and 35K—starting and finishing at the San Pablo Reservoir Recreation Area in EBMUD land. This race was the first to completely circumnavigate Briones Reservoir on permit trails, offering tre..

Yuba Gold Trail Runs takes place near Nevada City, California, in gold country. The event offers 50K, 35K, and Half Marathon distances along a historic route with views of the South Fork Yuba River and the Malakoff Diggins site. It’s an Independent P2P (DIY/self-guided) adventure rather than a tradi..

Kokanee Trail Runs, held in the Lake Tahoe Basin near South Lake Tahoe, California, features a half-marathon, 5K, 10K, and a Tadpole Trot for kids along Fallen Leaf Lake and a sweeping route over Tahoe Mountain for the half-marathon. The event is RRCA-sanctioned and renowned for its scenic courses a..

Mile Madness Endurance Run takes place at Sunset Whitney Recreation Area in Rocklin, California. The race uses a 1.05-mile loop (85% dirt, 15% paved) with about 62 feet of elevation per lap and a central Start/Finish hub. Runners choose from 6-, 12-, 24-, 48-, or 72-hour events, plus a 100-mile chal..

Granite Head 2025, billed as Granite Bay’s Best Trail Run and part of Trails & Ales, is a two-distance trail race presented by Altra in Granite Bay, California. Runners can tackle a gnarly 6.6-mile short course or an epic 11.2-mile long course. Both start and finish at Granite Beach, with the course..

Go Wild Marin offers a trail and wilderness navigation challenge in Corte Madera, California, with 2-hour and 4-hour options. Teams of 1 to 5 use a custom map to locate up to 24 checkpoints scattered along trails and wild areas of the Tiburon Peninsula. The event emphasizes exploration and navigatio..

The Napa Lapa Trail Adventure, held at Skyline Wilderness Park in Napa, California, is Inside Trail Racing’s first time-based ultrarun. Runners compete for a set amount of time rather than a fixed distance, choosing to cover as much terrain as possible within 3, 6, or 12 hours. Each loop is about 4...

Euchre Bar Massacre is an ultramarathon near Foresthill, California, offering 25- and 50-mile fatass-style routes along the North Fork of the American River. The rugged course ladders about 10,000 feet of climbing for the 25-mile option and roughly 20,000 feet for the 50-mile, with substantial bushw..

Champion Mine Trail Race is held in Nevada City, California, featuring two events: a half marathon (13.1 miles) and a 5K Fun & Fitness Run/Walk. The inaugural race from the Bear Yuba Land Trust and Sierra TrailBlazers uses a dynamic mix of pavement, gravel, and single-track trails, with rewarding cl..