Miami Backyard Ultra

CAME TO FIND OUT.

One 4.167-mile yard. Every hour. Until one remains.

Miami Backyard Ultra starts December 19, 2026 at 8:00 AM EST at Miami Marine Stadium / Virginia Key, Miami.

Finish each yard in less than one hour, reset in the time left and start with the field at the next bell. There is no preset finish time or distance. The winner completes one more yard than everyone else.

No previous Backyard Ultra or ultramarathon finish is required. Different goals. Same course. Same clock. Same rules.

Race details, rules and registration: https://miamibackyardultra.com/
Instagram: https://www.instagram.com/miamibackyardultra/