Isochrone maps old and new

france

We’re looking at “walkscores” this week as part of a little assignment. Note that the walkscore.com website includes travel time maps, which show how far you can get in any direction from a particular address in a given amount of time. Maps based on this idea of isochrony go back at least to the 1880s, and sometimes covered whole countries or the world, as described in this Atlas Obscura article: “Traveling Back in Time With Colorful Isochrone Maps.” Contemporary maps based on the same principle are helpful tools for urban commuters today. Check out the cool maps in this Washington Post piece: “Leaving Town at Rush Hour? Here’s How Far You’re Likely to Get from America’s Largest Cities.”