Among the cobbled cycling races the three most historical are usually held on consecutive Sundays in March and April: Gent–Wevelgem, Tour of Flanders and Paris–Roubaix. Gent–Wevelgem has lost a lot of its historical status due to the relative easiness of the route. E3 Harelbeke is considered to be harder and thus better preparation for the Ronde and Roubaix. In 2012, both races received equal status on the UCI Pro Tour.
In 2012 Belgian rider Tom Boonen managed to win all 4 races in the same season, as the first and only rider to do so.