Trail Running Calendar California 2025-2026

The Jackalope Lope is an exciting trail running event set in the scenic Whiskeytown National Recreation Area, known for its challenging terrain. Participants can choose from three distances: 50K, 20 Miler, and 8 Miler, catering to various skill levels. The event promises a well-marked course, suppor..

The Pasadena Trail Half Marathon is a premier running event hosted by Pasadena Running Company, featuring challenging routes that highlight the scenic trails of Pasadena. Scheduled for October 19, 2025, this event offers three distance options: a Half Marathon, 10K, and 5K, catering to runners of al..

Weekend at Burney is an exciting running event set in the scenic Lassen National Forest, featuring a looped 4.6-mile course that showcases the area's natural beauty, including lush greenery and diverse wildlife. Participants can choose from various timed options, including 12-hour and 24-hour challe..

The Napa Fall Wine Country Marathon is a scenic running event taking place in Bothe-Napa Valley State Park, California, on October 25, 2025. This 33rd annual marathon features a challenging course with lush trails, hills, and streams, making it a rewarding experience for participants. The event incl..

The Trail Run at Sly Park - Fall is an exciting running event taking place at the Sly Park Recreation Area in Pollock Pines, California. Scheduled for October 25, 2025, this race features a variety of distances including 5K, 10K, 8 Mile, Half Marathon, 17 Mile, Trail Marathon, and 50K, catering to r..

The Oakland Hills Trail Run is an exciting outdoor running event taking place in the scenic Redwood Regional Park and EBMUD Trails in Oakland, California. Participants can choose from three distances: 10K, Half Marathon, and 35K, all set against a backdrop of stunning redwood forests and diverse wil..

The Haunted Hills 10K in Redwood City is a unique running event scheduled for October 25, 2025. Participants can form teams of 1 to 5 and embark on a fun-filled adventure through the festively decorated neighborhoods. The course features approximately 36 checkpoints for the 10K, where runners will a..

The Range of Light Trail Races, taking place in Bishop, California, offers a scenic and challenging experience for runners of all levels. Participants can choose from four distances: 50k, 33k, 10k, and 5k, making it suitable for both seasoned athletes and casual runners. The event serves as a fundra..

The 2025 Encinitas Beach Run, presented by Excelerace, is a unique running event taking place at Moonlight Beach in Encinitas, California. Participants can choose between a 5k and 10k run along the scenic sandy coastline, with turn-around options available. The event features a festive atmosphere, i..

The Twilight's Last Gleaming Cross Country Challenge will take place in Ventura on Saturday 25 October 2025.

The Machete Trail Madness 100 Miler is a challenging ultramarathon event held in Lake Perris, California, featuring a 100-mile, 50-mile, and 10-mile race. Scheduled for October 31, 2025, this event is known for its tough course, with a 10-mile loop that includes 2,300 feet of elevation gain per lap...

The ZombieRunner Halloween event is a festive running competition taking place in San Jose, CA, featuring a variety of race distances including a 5K, 10K, Half Marathon, and Marathon, along with youth categories and a free Kid's Run. Participants are encouraged to dress in Halloween costumes for a c..

The Roosters Backyard Ultra will take place in San Diego on Saturday 1 November 2025.

The Almaden Hills Trail Run - Fall is an exciting running event taking place in the scenic Almaden Quicksilver park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, Half Marathon, 8 Mile, 10K, and 5K. The course features a mix of 60% dirt roads a..

The Wildwood Canyon Trail Run is an exciting running event set in the picturesque Wildwood Canyon State Park in Yucaipa, CA. Participants will tackle a scenic 3.6-mile loop course, surrounded by stunning natural landscapes, including rugged canyons and oak-studded hills. Runners have 8 hours to comp..

The Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon event taking place in the scenic Sierra Foothills of California. Scheduled for November 1, 2025, this challenging race starts at Beal's Point and features a diverse course that includes trails, paved paths, and stunning views of Fols..

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk is set to take place at Joaquin Miller Park, supporting the Oakland Tech Cross Country and Track Team. This event features a scenic 5K trail run and a 1-mile fun run/walk, designed to cater to both competitive runners and leisurely partici..

The Rancho Ramble Trail Run will take place in Santa Margarita on Sunday 2 November 2025. You can run between 10 and 50 kilometers.

The NorCal Backyard Ultra is an endurance running event taking place at Folsom Lake’s Beals Point from November 7 to 10, 2025. This unique race format challenges participants to complete a 4.2-mile loop every hour until only one runner remains, with a separate Mini Last Person Standing event for tho..

The Rancho Hills Trail Run - Fall is an exciting trail running event set in the picturesque Rancho Cañada del Oro Open Space Preserve in Morgan Hill, California. Scheduled for November 8, 2025, participants can choose from various distances, including 5K, 10K, 8 Mile, 10 Mile, Half Marathon, 30K, Tr..