Miami Backyard Ultra

Key Biscayne, Florida, United States

Dec 19, 2026 - Saturday

Ultra

Race Information

Miami Backyard Ultra brings the traditional backyard ultra format to Miami.

Runners complete a 4.167-mile loop every hour on the hour. Finish the loop within the hour, recover with whatever time remains, and return to the starting corral for the next one. The race continues until only one runner remains and successfully completes the final yard.

Set at the Miami Marine Stadium Basin, MBU is built for everyone from experienced ultrarunners competing to be the Last Runner Standing to runners looking to discover a distance they’ve never reached before. Your goal might be your first ultra, 50 miles, 100 miles, or simply one more yard than you thought possible. Everyone shares the same course, the same clock, and the same rules. One yard. Every hour. How far can you go?

πŸ‘ Run Pick of the Month: Cocoa Beach Half Marathon & 10K

πŸ“ Cocoa Beach, FL - November 15, 2026

πŸ’Έ SAVE $10 On Entry. Use Code: 26RUNGUIDES

πŸ˜„ Why We Like This Run
βœ… Run Historic Highway A1A and Cocoa Beach
βœ… Memorable finish on I Dream of Jeannie Lane
βœ… Custom finisher medal and hat

Boogie down at the Cocoa Beach Half Marathon & 10K, a one-of-a-kind beach race inspired by I Dream of Jeannie and this year's groovy Disco theme. Race along Historic Highway A1A and hard-packed oceanfront sand before celebrating with music, food, cold Carib beer, costumes, and a lively finish line party in the heart of Cocoa Beach.

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Race Facts

Race Size: 100 - 500

Elevation: Fast and Flat

Course Type: Trail

Boston Qualifier: No

Kids Run: No

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