While Sabbe is not a professional athlete, he has repeatedly set several speed records on prominent trails and completed elite races such as Barkley Marathons.

[1] This was followed by the Marathon des Sables (2016) in preparation for the Pacific Crest Trail (2016), where he finished 38th out of 1,200 starters.

He eventually finished the 4,300 km long Pacific Crest Trail in 52 days, dethroning world record holder Joe McConaughy.

He also smashed the record on the Appalachian Trail (2018), which was also previously held by Joe McConaughy, by more than 4 days.

During the summer of 2021 he set the new speed record on the Via Alpina, a long-distance hiking trail through the Alps.