Skyline 50k Endurance Run

The Skyline 50K Endurance Run, held annually in August at Lake Chabot Marina in Castro Valley, California, is one of the longest-running 50K races in the state and among the oldest in the U.S. The course features a large loop through the scenic East Bay Regional Parks, reaching Skyline Gate. Known for its welcoming atmosphere, the race is ideal for first-time ultrarunners and competitive for veterans.

Aid stations are well-supported by local running groups, and volunteers provide guidance and encouragement along the route. The event concludes with a plant-based BBQ and beer at the marina, making it a festive and inclusive experience for runners and families alike. Visit the organization's website for the most recent information.