We all know the cobblestone sections such as Haaghoek, Mariaborrestraat, Paddestraat, ... from the Tour of Flanders, but have you ridden any of these?

Distance 1.4km Altimeters 42m
Distance 1.3km Altimeters 26m
Distance 1km Altimeters 10m
Distance 1km Altimeters 6m