having done a few are sportives not akin to trail centres?
you can roll up in an area you dont know but want to ride, blindly follow signs for someone elses planned route, know there’ll be some where to stop for the loo and hopefully be fed your lunch. i like to go as fast as i can as that’s the point of road riding for me but it can’t be a race as its not mass start.
interested in the french example and i think the grand fondos in the states are mass starts so i guess you could ‘race’ those but uk sportives are just inclusive, fun mass participation cycling events for different standards, which is a good thing. so back to the OP you’ll be fine.