Big'S Backyard Ultra 2024 Results 2024. Backyard ultra is a form of ultramarathon race where competitors must consecutively run the distance of 6706 meters (4.167 miles) in less than one hour. The backyard ultra takes place on a looped track of around 6.7km or 4.2 miles.
At 0640 hours on saturday, october 20, we will start a race around the 4.166667 mile big trail. The time limit will be one hour.