The Tour of Flanders or Ronde of Flanders () is a Flanders Classics road cycling race held in Belgium every spring, a week before the Paris–Roubaix road race. It is part of the UCI World Tour and one of the so-called monuments of the European professional calendar. It is the most important cycling race in Flanders. Its nickname is Vlaanderens mooiste (Dutch for “Flanders’ finest”).