A long-distance marathon, a race called
Big Dog’s Backyard Ultra, a race that runs 6.7km in rural backyard for an hour
6.7km in marathon?Instead, this race is endless. Run 6.7km in an hour until the last one is left, and the rest of the hour can be used for rest.
If you don’t get up after more than an hour of lap or
recovery time, you’re out
The current record is a Belgian dentist running 502 km in 75 hours.