TRAIL RACE!!! Come run with us through some of the most beautiful and challenging trails within the San Diego city limits. Our three race distances, 50K, 25K, and HALF marathon, provide opportunity for first-time trail runners up to veteran ultrarunners. Starting at Hilltop Park, runners wind through the beautiful single-track trails within the Black Mountain Open Space. After checking out the beautiful 360-degree views at the Summit, runners from all distances dart downhill to the finish, where food, drinks, and friends await you!