Stage 21: Thoiry to Paris (Champs-Elysees)

Stage 21 is cycling's coronation ceremony. The 130 km ride from Thoiry to Paris is not a race in the traditional sense -- it is a procession. The yellow jersey rides at the front of the peloton, champagne in hand, accepting congratulations from the riders who spent three weeks trying to take the jersey from him. The convention is unbreakable: nobody attacks the yellow jersey on the road to Paris.

The race restarts on the Champs-Elysees circuit. The eight laps of the cobbled boulevard, with the Arc de Triomphe at one end and the Place de la Concorde at the other, are contested at full sprint speed. The stage victory goes to the fastest sprinter, and a win on the Champs-Elysees is considered the most prestigious one-day result in cycling after the World Championship.

The final three laps are raced at speeds exceeding 55 km/h. The cobblestoned surface, the crowd noise, and the long straight into the final corner create a sprint that rewards positioning as much as raw power. Lead-out trains form and dissolve in the final kilometre, and the rider who emerges from the final corner in the top three positions typically wins.

The sprint trains spend the processional kilometres from Thoiry rehearsing their formations. By the time the race reaches the Champs-Elysees, every team with a sprinter has a plan for the final 500 metres. The execution of that plan, at 65 km/h on cobblestones, with the yellow jersey already decided, is pure theatre.

The Champs-Elysees stage starts at 16:30 CEST, the latest start time of the Tour. The finish arrives around 19:30-20:00 CEST, placing the sprint in the golden evening light that makes Paris the most photogenic finish in professional cycling. For UK viewers, the sprint arrives around 18:30-19:00 BST. For North American fans, 19:30 CEST is 13:30 EDT -- a Sunday afternoon conclusion.

After the sprint, the general classification podium ceremony takes place on the Champs-Elysees. The yellow jersey (GC winner), green jersey (points classification), polka dot jersey (mountains classification), and white jersey (best young rider) are all presented on the final podium. The ceremony is brief, formal, and emotional. Three weeks of racing, 3,333 km, 21 stages, and the answer to the only question that matters: who is the strongest rider in the world?