Crystal Springs (Winter) Trail Run

Crystal Springs Trail Run is a multi-distance trail race in Woodside, California, weaving through Huddart Park, King’s Mountain, and Bear Gulch. The event offers 8K, Half Marathon, 35K, Marathon, 50K, and a free Kids’ Run. Runners traverse towering redwoods, lush ferns, and varied terrain, with courses mixing single-track trails, dirt roads, and some pavement.

Elevation gains range from roughly 710 to 4,530 feet depending on distance. The course is clearly marked with color-coded flags and polka-dot turns, with blue ribbons signaling wrong turns. Fully stocked aid stations, a cupless policy, and finishers’ medals (plus shirts for pre-registered runners) mark the event. Visit the organization's website for the most recent information.