Slovak runner shatters 7-day treadmill world record

Last Thursday, Serbian-Slovak ultra-runner Michal Šuľa began a week-long venture going nowhere. Six days later, the 50-year-old successfully completed his attempt at the Guinness world record for greatest distance covered on a treadmill in one week (pending verification), covering 846.52 km in 151 hours (six days and seven hours). Šuľa streamed his entire run live on YouTube–and as of Wednesday afternoon, he’s still running.

“The Guinness record is behind us… 151 h, 846.52 km,” Šuľa announced on Facebook, where he posted regular updates of his progress. In his live stream, viewers can watch friends keep him company in the room and on the second treadmill. A white board is constantly refreshed hourly with the runner’s logged distance, and “sleep” is written when Šuľa steps off the treadmill for periodic breaks.

The previous record of 843.94 km had been held by the U.K.’s Jamie McDonald since 2019. Šuľa’s run also surpasses the female seven-day treadmill world record of 846.16, held by New Zealand’s Emma Timmis since June 2024.

Šuľa took on the challenge at a physical therapy clinic, the Movement Institute, in Bratislava, Slovakia. The organization shared the runner’s entire journey on Instagram, YouTube and Facebook. “Michal is aiming even further–his goal is an incredible 1,060 km!” the Movement Institute wrote on Facebook. According to Šuľa, the official, non-Guinness seven-day world record stands at 1,056 km.

In early 2024, Šuľa became a two-time Slovakian champion; he won the 24-hour national championship in March in Nitra, Slovakia, logging 224 km, and climbed to the top of the podium again at the 100-km race in June in Šamorín, Slovakia. Šuľa clocked 7:34:22, winning by nearly an hour and a half.

According to recordholders.org, Šuľa also managed to break the 6-hour treadmill world record on Dec. 14, less than four weeks ago; he ran 85.89 km over the half-dozen hours. His performance exceeded the previous record of 53.05 km, run by Italy’s Luca Ricci in April 2024.

posted Thursday January 9th
by Cameron Ormond