Trail Running calendar near Castro Valley 2024-2025

The Napa Wilderness Trail Runs, organized by Bay Trailrunners, takes place at Skyline Wilderness Park in Napa, CA, offering a variety of trail running distances including 40 miles, 50K, 30K, half marathon, and 10K. This event caters to all levels of runners, from seasoned ultra-marathoners to beginn..

The 13 Mile Trail Race Top Down is a half marathon event taking place in San Jose, CA, within the scenic Almaden Quicksilver Park and Sierra Azul Open Space Preserve. This inaugural race features a point-to-point course, with transportation provided to the starting line. Participants can expect a ch..

Trailquake is an exciting running event taking place in Saratoga, California, featuring a half marathon, 10K, and 5K race. Set against the stunning backdrop of redwoods and pines, participants can enjoy beautiful trails while experiencing the thrill of nature. The event welcomes runners, walkers, an..

The Sonoma Coast Trail Runs, organized by SkyBreaker Racing, is a scenic running event held in Sonoma Coast State Park, California. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, and Half Marathon. The courses offer breathtaking views of the coastline, traversi..

The Calero Trail Run - Spring is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including 50K, Marathon, 25K, Half Marathon, 15K, 10K, 5K, and a Kids Run. The course features scenic single tracks, challenging hills, and dir..

The Wildcat Half Marathon, scheduled for May 31, 2025, in El Sobrante, California, features a scenic trail race with options for a half marathon, 10K, and 5K. Participants can enjoy breathtaking 360-degree views of the Bay Area, including landmarks like the Golden Gate Bridge and Alcatraz. The event..

The Toro Park Trail Run offers a scenic running experience in Salinas, California, featuring a variety of race distances including a Full Marathon, Half Marathon, and 10K. Set in the picturesque Toro Park, participants can enjoy the rolling golden hills and beautiful Bay Area trail scenery. The even..

The 2025 Lake Chabot Trail Challenge features a Half Marathon and a 5K run, taking place in Castro Valley, California. This annual event, now in its 41st year, is popular among trail runners and offers scenic courses with views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon ..

The Cinderella Trail Run, scheduled for June 1, 2025, in Oakland, CA, offers a variety of race distances including an 8K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The scenic course winds through Joaquin Miller and Redwood Regional parks, featu..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race durations: 12-hour, 6-hour, and 3-hour options for both solo participants and teams. The course is a scenic one-mile loop around Crissy Field, offering stunning views of the Golden Gate Bridge and the San..

The Mt. Umunhum Ultras is an exciting trail running event set in the scenic Santa Clara Valley and Sierra Azul Open Space Preserve. Participants can choose from various distances, including a challenging 52-mile ultra, 50K, trail marathon, and shorter options like a 5K and 10K.The race features over..

The China Camp Trail Run is an exciting running event held at China Camp State Park in San Rafael, California. Participants can choose from three distances: 5K, 10K, and Half Marathon, all featuring scenic trails with views of Mt. Tam and San Pablo Bay.The courses offer a mix of technical dirt trail..

The Angel Island Half Marathon is a unique running event taking place at Ayala Cove in Angel Island State Park, Marin County, CA. Scheduled for June 21, 2025, participants can choose between a half marathon and a 5-mile race, both of which include ferry transportation. The event offers stunning 360-..

The Golden State Trail Run, hosted by Inside Trail Racing, is a premier summer event taking place at Fort Ord National Monument in Monterey, CA. Participants can choose from four distances: 10K, Half Marathon, 35K, and 50K, each featuring unique trails that showcase the area's diverse flora and faun..

The Rancho Hills Trail Run - Summer is an exciting running event set in the picturesque Rancho Cañada del Oro Open Space Preserve in Morgan Hill, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, Half Marathon, 10 Mile, 8 Miler, 10K, and 5K. This challenging r..

The Dirty Dozen Run, organized by Brazen Racing, is a unique endurance event taking place at Point Pinole Regional Shoreline. Scheduled for July 12, 2025, participants can choose to run for 12, 6, or 3 hours, either solo or in teams of two or three. The race features a scenic 3.37-mile loop primaril..

The San Lorenzo River Trail Run is an exciting running event taking place in Santa Cruz, California, featuring multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Participants will enjoy a scenic course that winds..

The Calero Hills Trail Fest is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a marathon, 30K, half marathon, 10 miler, 10K, and 5K. The courses feature challenging ascents and descents through scenic oak groves, ..

The Skyline 50K Endurance Run is one of California's oldest and most celebrated 50K races, taking place annually in August at Lake Chabot Marina in Castro Valley. This event is designed for both first-time ultrarunners and seasoned veterans, featuring a scenic course that loops through the East Bay ..

Bear Creek Run is a trail running event taking place in Lafayette, California, featuring a Half Marathon, 10K, and 5K on August 9, 2025. The courses are known for their challenging hills, offering participants a scenic experience through Briones Regional Park. Hikers and walkers are welcome, making ..