Bad Ass Backyard Ultra - Rio Linda, CA

The Bad Ass Backyard Ultra, organized by Skybreaker Racing in collaboration with Auburn Area Trail Runners, is a unique running event held at Dry Creek Parkway in Rio Linda, California. Participants must complete a 4.16-mile loop within one hour, with new loops starting every hour on the hour. Runners who fail to be in the start corral at the designated time are eliminated.

The event, which began in 2023, emphasizes endurance, with the winner being the last person to complete a loop. Runners receive event t-shirts and a special award for the winner. Visit the organization's website for the most recent information.