@FlandriaBikes.com and others who are Level 50+ cyclists:
The thing to look at is your Ride Score in the Pause menu. It’s your Rider Score that determines your level so that’s what you should look at (not the XP bumps at each kilometer) to make sure you’re gaining levels until the current L60 ceiling for cycling / L30 ceiling for running.
Please see this part of the Tracking Your Rider Score article for a more detailed description.