On the cycling bridge in RSE, there's the guy at the end who rates your cycling skills. He has different dialougue based on how well you did, with one telling you you should consider returning the bike if you bump into things 100 times.
Also, there's a trainer there at the red arrow. I didn't know for a long time.
https://bulbapedia.bulbagarden.net/wiki/Seaside_Cycling_Road#Mach_Bike_ride_rating 