St Louis has a velodrome at
Penrose Park. I am embarrassed to say I have never ridden it, even though I have a Lejeune piste in my collection. There is a race program, teaching events, and rental bikes available. Track was resurfaced in 2019. Prior to that, it had earned the moniker "Mr. Bumpy Face". Obligatory vintage bike photo below.
And my Lejeune piste. Wheels by Earle Wheels.