I'm lucky to live next to Prospect Park, which is a beautiful place to run. I've done the main loop of the park hundreds of times over the years.
Toward the end of 2014, I decided to take a break from running the same route around the park and instead explore the neighborhoods bordering the park. Compulsively, I decided to systematically run on every street in a region around the park.
I recorded my runs using Strava, and this d3 visualization shows the progress of my exploration between November 2014 and March 2015. It makes me weirdly happy.
(This doesn't work great on mobile.)
Animation speed