The Kluisberg is one of several hill formations in the Flemish Ardennes in the south of East-Flanders, close to the border with Wallonia.

The climbing road is best known for its presence in many Flemish professional cycling races, such as the Tour of Flanders, E3 Harelbeke and Dwars door Vlaanderen.

Halfway up the climb, near the church of Kwaremont village, the gradient gradually levels out from 11% to just 2%, but with still a cobbled kilometer to go to the top.

When the parcours of the Tour of Flanders was restyled in 2012, the Oude Kwaremont, together with the nearby Paterberg, became the cornerstone of the race.

For instance, Niki Terpstra in 2018 and Alberto Bettiol in 2019 shook off their last remaining competitors on the Oude Kwaremont to win solo in Oudenaarde.