[Someone]

> for cyclists that are averaging 20 miles an hour

I don’t think modern professional cyclists even can ride at 20 miles an hour ;-)

20 miles an hour didn’t win you the Tour de France in 1950. Nowadays, with better tech, better training, and shorter stages, you have to do over 25 miles an hour to win it, and the last rider in the general classification easily is within 10% of that.

[le-mark]

The last rider that finished and it’s not like if you or I go out and try to ride a hundred miles at 25 mph solo. Drafting and team dynamics play a significant role is energy expenditure.

[klyrs]

I'm not a pro cyclist but I've seen one stop before. By the intermediate value theorem, they can ride at 20mph.