I’ve subscribed to Strava now, because I couldn’t find a cycling route planner that works for me as well as the Strava one. Even so, I don’t find the new, paid up version of the route planner nearly as usable as the previous free, beta version so I’m unsure if I’ll continue as a subscriber past the free trial.
However, one useful perk for subscribers is the ability to see a personal ‘heat map’, and this is (most of) mine:
Unsurprisingly the stretches down to Twycross, and over toward Packington and Ashby burn brightly red. But even roads I’ve only done once, like the remote end of the Norfolk trip I did in 2017 (not pictured above), are highlighted in a faint blue.