The Austria Backyard Ultra in Wagendorf, located in Eastern Styria, is a trail race structured around the straightforward yet demanding Backyard Ultra format. Each hour, participants begin a new 6.706 km loop, with a strict one-hour time limit to complete it. Failing to meet the cutoff or start the subsequent loop results in elimination. The race continues without late starts until a single competitor remains.
The organizers characterize the course as a scenic trail path, but the core appeal lies in the format's mathematical progression. Completing seven loops surpasses marathon distance, 15 loops reach 100 km, and 24 loops total 100 miles. This event adheres to the official guidelines of the original American Backyard Ultra, and this Wagendorf iteration is in its early stages, currently hosting its third edition.