Sierra Azul Trail Challenge

San Jose, United States • 19 Apr 2025

The Sierra Azul Trail Challenge is a premier running event held in the scenic Sierra Azul Open Space Preserve, near Mt. Umunhum in San Jose, CA. Participants can choose from various distances, including a 50K, Trail Marathon, 20 Mile, Half Marathon, 7 Mile, and 5K, making it suitable for runners of all levels.

This challenging race offers unique access to beautiful trails and breathtaking scenery, providing an unforgettable outdoor adventure. Runners are encouraged to prepare for the demanding terrain and enjoy the stunning natural surroundings. For more details on course information and maps, visit the event's official website. Visit the organization's website for the most recent information.

Race information

50 km
50K
26 mi
Trail Marathon
20 mi
20 Mile
13 mi
Half Marathon
7 mi
7 Mile
5 km
5K
Visit the organization's website for the most recent information.
Trail runs nearby

The Zoom Turkey Trot is a festive running event taking place in San Jose, California, featuring multiple race options including a 5K, 10K, and Half Marathon, along with youth categories and a free Kid's Run. Scheduled for Thanksgiving morning, participants can enjoy a scenic run along the Coyote Cre..

The Quarry Turkey Half Marathon is a family-friendly running event taking place on November 30, 2024, at Quarry Lakes Regional Park in Fremont, California. Participants can choose from a half marathon, 10K, or 5K, along with a free Little Turkeys race for children. The event encourages Thanksgiving-..

The Calero Trail Run - Winter, held at Calero County Park in San Jose, CA, offers a variety of trail running distances including 50K, Trail Marathon, 25K, Half Marathon, 15K, 10K, 5K, and a Kids Run. Participants can enjoy scenic single tracks, challenging hills, and dirt paths, making it an excelle..

The ZombieRunner Quarry Lakes event, scheduled for December 7, 2024, in Fremont, California, features a variety of running distances including a 5K, 10K, Half Marathon, 30K, and Marathon, along with youth categories and a free Kid's Run. The scenic course begins at Quarry Lakes Regional Recreation A..

The Summit Rock Half Marathon, along with 10K and 5K events, takes place in the scenic Sanborn County Park, Saratoga, CA, on December 14, 2024. Participants can enjoy running through beautiful redwood groves and single-track trails, with the half marathon and 10K featuring challenging ascents and br..

The Woodside Ramble, organized by Inside Trail Racing, is a scenic trail running event held at Huddart County Park in Woodside, California. Participants can choose from four distances: 10K, Half Marathon, 35K, and 50K, catering to runners of all skill levels. The course features beautiful trails sha..