San Diego's premiere ultra marathon and trail race located within city limits! Celebrate our open spaces, build confidence, and make friends while running the 50k (31 miles), 25k (16 miles), or half marathon (13 miles) distance. Enjoy beautiful vistas of the Pacific to the West and the Cuyamaca Mountains to the East, and gain a better appreciation for all that natural San Diego has to offer! These courses will challenge you and push you past what you ever thought was possible. Join us in 2024!