There was a thread here a while ago about "Who used to compete" as a cyclist
I should have contributed, but I didn't
But when I was about 17, I sneaked into the national finals for the English Schools Cycling Association's circuit race. Three laps of a 3 mile circuit on an old disused USAF airfield in the East of England, then used as the test track for Lotus racing cars
I remember clearly grinding into a headwind towards signs showing the shape of a distant bend and the advice "Max 120 mph". One of those things that still figures in bad dreams!!