Head to Golden, CO for this exciting community-focused event where you'll complete 4.17-mile loops starting on the hour until a single runner remains standing—jump in for a single lap or push yourself to ultramarathon distances! The action kicks off at 10:00 AM (with registration opening at 9:00), giving you the freedom to run however suits you best, whether that's sprinting for more downtime between loops or maintaining a steady effort to preserve energy. Limited to 60 participants at $50 entry, the race also welcomes a suggested $25 donation to support Sun Valley Kitchen and Community Center, which helps fund aid stations, prizes, and event operations.