Terrible, Horrible, No Good, Very Bad Day 50K

The Santa Cruz Track Club Cross Country Challenge is a 4.15-mile race held on the fire roads of the upper University of California, Santa Cruz campus. The course consists of two loops, starting and finishing at an open meadow above the UCSC Firestation on Chinquapin Road. This event is part of the P..

Run-de-Vous is an ultramarathon event at Harvey Bear Ranch Park in San Martin, California. Runners can tackle distances including 100M, 100K, 50M, 50K, a 50M Relay (four-person teams), a marathon, and a half marathon. The course is a fast, easily managed 2-mile loop, bordered by rolling hills and di..

The SPASM Crystal Springs Trail Run takes place in Woodside, California, at Huddart Park, offering runners a scenic experience through towering redwoods, lush ferns, and trails in Huddart Park, King's Mountain, and Bear Gulch. The event features multiple distances: 8K, Half Marathon, 35K, Marathon,..

The Apple City 5k is an inaugural running event held at Pinto Lake County Park in Watsonville, California. Celebrating the agricultural heritage of the Pajaro Valley, the race features a scenic 5k course along gentle trails that circle the park's meadows. In addition to the main 5k, there is a Kids..

The Stevens Creek Striders Reservoir Run, held in Cupertino, California, offers a scenic trail running experience with distances of a half marathon (13.2 miles), 11K, and a 2.5-mile Lollipop Loop charity run/walk. The course features shaded single-track trails and open ridge vistas, with challenging..

South Hills Single Track Trail Run - Summer takes place at Calero County Park in San Jose, CA. The event offers multiple distances: 50K, trail marathon, 16 miles, half marathon, 9 miles, 10K, 5K, 1 mile, and a Kids Run. Runners encounter classic single-track trails, rolling hills, and dirt paths thr..