50K
Both the 50K and 30K follow loop courses on rolling dirt roads through classic Mojave Desert terrain. The courses climb and descend between 2,400 and 3,500 feet elevation, providing sustained but manageable challenges without technical trail obstacles. The desert setting offers expansive views and in December often features surprising displays of green vegetation and blooming wildflowers following winter rains.
Nine aid stations are positioned strategically throughout both courses, with key checkpoints including Gracie's aid station at 24.8 miles on the 50K and 15.1 miles on the 30K. The dirt road surface provides good footing year-round while maintaining the authentic desert trail experience that has drawn runners to this event for nearly four decades.