Strava* compiles the ride data of millions of subscribers to produce a ‘heat map’ of where cyclists are riding. If you follow the link embedded in the map screenshot, it will show you the accumulated data up to 2017. The map can be fully enlarged to show you the details of where people are riding in the area where you live.
The heatmap is also a useful guide to where people ride, if you’re visiting somewhere new. However, it’s important to realise that many of the people who use Strava are serious cyclists who like to ride far, fast and difficult. As more and more average cyclists use Strava, the data will be less skewed towards the fast and furious end of cycling.
*Strava is an ap. which can be uploaded to a mobile phone, and will also link to GPS trackers like Garmin. It tracks the user’s rides, giving a map, distance, ascent and other statistics. It is available in a basic free version, or a premium version. If you don’t have a bike computer, Strava will give you an accurate picture of how far and fast you have ridden.