Karel Sabbe wins Big Dog’s Backyard Ultra after 75 hours of running, handing Belgium victory over US

Karel Sabbe won the race with no end by running for 75 hours, 502km, around a 6.7km loop. Sabbe’s victory came down firstly to a national battle between the US and Belgium, then a one-on-one duel with fellow Belgian Merijn Geerts.

The diabolical Big Dog’s Backyard Ultra is one of the most mind-boggling concepts in running. Participants have one hour to complete a 6.7km loop. They can go as fast or as slow as they like, so long as they are at the start line at the beginning of the next hour. Participants keep going until there is just one runner left.

This year, due to Covid-19 travel restrictions, there were 21 simultaneous Backyard Ultras the world over, with over 300 runners. The winner of each race was only allowed to complete one more lap than the second-placed runner, and then each race ended locally. So, for a nation to be crowned world champions it effectively came down to a battle of second place runners.

The final four were Courtney Dauwalter and Harvey Lewis in Tennessee, and Sabbe and Geerts in Belgium. They were left circling their tracks after Mexico, the third last nation standing, dropped out at 64 hours.

Lewis dropped out after 67 hours. He headed out on his 68th loop but soon returned hallucinating. Dauwalter finished her 68th to claim the US title. But the overall victory then lay in the hands of the Belgian pair, who continued in a duel for seven more hours.  

The local race organiser said the pair had been working together because they knew when one dropped out, the other would have to as well. “But now the game begins,” the organiser said.