Run the Rim

Run the Rim is a trail running event held at White Pines Lake Park in Arnold, California, featuring three course options: a challenging 22-mile point-to-point trail run, a scenic half marathon, and a 10K run. The courses wind through the Arnold Rim Trail, showcasing majestic pine, fir, and cedar forests at around 4,000 feet elevation with breathtaking vistas. The 22-mile race covers the entire Arnold Rim Trail, while the half marathon and 10K start and finish at White Pines Lake, with mostly single-track trails shared by hikers, mountain bikers, and equestrians. The event supports the Arnold Rim Trail Association’s efforts to maintain this beautiful trail system. Visit the organization's website for the most recent information.