E3 Harelbeke, is an annual road cycling race in Flanders, Belgium. The race starts and finishes in Harelbeke, covering 203 kilometres, mainly in the Flemish Ardennes.
First raced in 1958, it is one of the more recently founded one-day classics, but has developed into a highly prestigious and desirable event. It is on the UCI World Tour calendar, as the competition's first cobbled classic of the season.
Belgian Tom Boonen holds the record of victories with five wins, trailed by cycling icon Rik Van Looy who won four times.