Top level competitive flying 200's are sub 10s. That's an average speed over the timed distance of 72km/h or 44.75 mph with a peak around 75-77km/h.

https://en.wikipedia.org/wiki/World_record_progression_track...

edit to add the Tokyo Olympics qualifiers all under 10 seconds: https://en.wikipedia.org/wiki/Cycling_at_the_2020_Summer_Oly...

You can look at Tadej Pogačar’s recent rides on Strava.

It’s awe inspiring. His times are just so fast, and over hilly terrain in the heat, for day after day.

apples to oranges. Look up this meatball https://en.wikipedia.org/wiki/Robert_F%C3%B6rstemann

“His thighs were measured with a circumference of 73 centimetres (29 in). A circumference of 86 centimetres (34 in) has also been recorded, and the size of his quad muscles has led to him being called "Quadzilla" by some in his sport.”