Miami Backyard Ultra
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Miami Backyard Ultra 2026
Miami Backyard Ultra is an hourly loop event held at Miami Marine Stadium / Virginia Key in the Basin on December 19, 2026. The format requires runners to complete a single loop each hour and return to the corral before the next bell. There is no preset finish time or distance; the event continues until one runner completes one more yard than all others.
Each planned loop measures about 4.167 miles (described as 4 miles plus 880 feet). Runners must complete every active yard in less than one hour. Recovery time between yards equals the remainder of the hour after finishing the loop. Late or missed starts are not permitted and competitors may not skip a yard and rejoin.
The planned course combines dirt trail and paved or concrete sections through the Basin and is intended to remain the same after dark. Final measured course details and the precise start/finish area are to be published before the event. After-dark runners are advised to prepare a headlamp and backup light and to bring familiar nutrition and hydration supplies for use between yards.
No personal aid is allowed during an active yard, and pacers or other non-competitors may not accompany runners on the course. Crew and spectators are welcome in designated areas and may provide support between yards. Arrival, packet pickup, parking, access and other site procedures will be included in the Athlete Guide. Visit the organization's website for the most recent information.
