Spotify is expanding its fitness features with Running Mode, which creates personalized playlists based on your desired speed and preferred music. Running Mode uses 25 curated presets, and starts by asking you what type of workout you're planning: interval, steady, or pyramid. Presumably, Running Mode uses your likes and dislikes learned from your Spotify listening history, but the brand hasn't confirmed this. To find it, head to the Fitness Hub in your iOS app and look for Running Mode near the top. This worked by monitoring your device to determine your running tempo and deliver a customized playlist at that pace.