Which bicycle race is the oldest of cycling's five Monuments?

Liège–Bastogne–Liège is the oldest of cycling’s five Monuments.

The Belgian one-day classic was first held in 1892 and is often called La Doyenne, meaning “the Old Lady.” Its route links Liège, Bastogne and Liège through the hilly Ardennes, making repeated climbs and changing weather central to the race’s character.

The five Monuments are generally identified as Milan–San Remo, the Tour of Flanders, Paris–Roubaix, Liège–Bastogne–Liège and Il Lombardia. They are regarded as the most prestigious one-day races in men’s road cycling.

Milan–San Remo is the longest Monument, while the Tour of Flanders and Paris–Roubaix are famous for cobbles. Those distinctions are separate from age: Liège–Bastogne–Liège began earliest, in the nineteenth century.