Android/iOS: A couple of months ago, Spotify launched Spotify Running, a section inside the Spotify app that creates running playlists based on your tempo. Now the feature's on Android as well.
In the Spotify app, head to the menu screen and select the Running option. Pick a playlist, then start running. The app then detects your tempo and picks songs based on how you're moving. If you're a runner, it's a pretty nice way to get automated playlists that match your speed.