I'm confused on how the term Brevet is used. Below is the pasted definition of brevet, and definition of randonee. The definition below indicates that a brevet is a sort of qualifying run.
What is a brevet, and what is a randonee, and which of these terms would apply to a century (or double century) ride?
From Sheldon Brown's Glossary:
Brevet: A
randonnée to qualify a rider to enter a longer randonnée.
Randonee: The French word "randonnée" is not exactly translatable into English. The closest is probably "hike", which is not commonly used in bicycle contexts. A randonné is an organized group ride, with some emphasis on speed, but it is not a race. Riders will typically be on road-racing or light-touring bicycles. Randonnées are often quite long, but do not normally involve stopping for the night away from the start. Some randonnées run all night. One of the most famous (and most rigorous) is the quadrennial Paris-Brest-Paris ride, 1200 kilometers, (750 miles) stopping only for meals and catnaps.