Haunted Hills 10K Redwood City

The Race to the Top of Mt. Umunhum Vert Trail Challenge is a half marathon event taking place in San Jose, California, within the scenic Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants will experience a challenging point-to-point course, with a six-hour time limit to compl..

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50-mile and 50K events. Set against the stunning backdrop of the Marin Headlands, Mt. Tamalpais, and Muir Woods, the race showcases a variety of terrains, including technical single-track trai..

The Redwood (Spring) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, 5-mile, 30K, Marathon, and 50K, along with youth categories and a free Kid's Run. Set against the stunning backdrop of Redwood Regional Pa..

The South Hills Single Track Trail Run - Spring is an exciting trail running event taking place at Calero County Park in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, Half Marathon, and shorter options down to a Kids Run. The course features scenic si..

The Horseshoe Lake Half Marathon is a scenic 13-mile race set in La Honda, California, featuring a mix of single-track and fireroad trails with stunning views of the Pacific Ocean and San Francisco Bay. The course includes gentle rolling hills, making it accessible for runners aiming for fast times...

The Terrible, Horrible, No Good, Very Bad Day 50K is a challenging ultrarunning event set for March 29, 2025, in Los Gatos, California. Participants can choose from three trail options: a 50K with a significant elevation gain of 10,900 feet, an 18-mile fun run, or a 10-mile puppy run. This non-suppo..