Strava is a fitness app that records your activities, including the routes of your walks, rides and runs. The service also provides an API that allows you to extract all of your data for analysis. University of Melbourne research fellow Marcus Volz created an R package to download and visualize Strava data, and created a chart to visualize all of his runs over six years as a small multiple.
Inspired by his work (and the availability of the R package he created), others also visualized bike rides, activity calendars, and aggregated route maps with elevation data. (You can see several examples in the Twitter moment embedded below.) If you'd like to download your own Strava data, all you need a Strava access token, a recent version of R (3.4.3 or later) and the strava package found on Github.