New Russian Backyard format record on Biotropika Ultra Trail!
And this record belongs to Vasily Korytkin, who made 46 laps on the Biotropika Ultra Trail in the Leningrad region. This means that he ran 46 hours and left behind 308.4 km. Interestingly, the average speed of the runner for almost two days is 5:06 min / km, and he ran the last lap in less than half an hour.
