The Crystal Springs Trail Run begins at Huddart Park in Woodside, California, leading runners into the wooded paths surrounding King’s Mountain and Bear Gulch. This winter trail race offers distances from a 5-mile run to an ultramarathon, including a half marathon, 22 miles, a marathon, and a 50K. A free 50-yard dash is also available for children aged 6 and under. Established in 2006, the event does not offer prize money, fostering a community atmosphere rather than a professional competition.
The course is predominantly unpaved, with approximately 95% of the route on dirt trails, featuring a total elevation gain of 4,810 feet. Participants will traverse redwood forests and areas dense with ferns. The organizers emphasize trail etiquette, requesting runners announce passes, remain on marked paths to avoid poison oak, and refrain from using headphones on single-track sections, road crossings, aid stations, and near the finish line. Bibs indicate each runner's chosen distance, and participants can change their race distance via email or during check-in.