Slogging along on the device of torture and misery that is the treadmill is hard to make fun unless you’re a masochist. But if you’re training for an upcoming race, snow, sleet, rain, and hail make outdoor running difficult; don’t lose hope. Thanks to developments in technology, treadmill apps are working to make your next run passable, if not fun. Plus, a handful of them provide coaching, meaning interval and tempo workouts are definitely possible. The more of those you do, the more your fast-twitch muscle fibers flex, meaning you can work on improving your speed. So, if the weather dictates an indoor run, download one of these apps and see how quickly those miles fly by.
Aaptiv

Aaptiv is the easiest way to workout with just your phone. While the app offers workouts for all gym machines, the treadmill options are particularly of note — especially when you need to get in some speed training. Aaptiv works hard to find top trainers who select upbeat tunes to keep you going through intervals. It’s $15 a month, but you get your first 30-days free.
Nike+ Run Club

Nike outfits top runners like Shalane Flanagan and Eliud Kipchoge, and they also make it easy to access a run with both of them, plus other Nike athletes and superstars (think Simone Biles, Kevin Hart, Mo Farah and more). You’ll first have to download each workout, which takes roughly 5 to 10 seconds depending on your connection, and then hit start. Link up your Spotify or Apple Music to listen, and easily change the music throughout. In the app, scroll through the options to preview the type of run (speed, recovery or long) and a duration. Then get ready for a lot of conversation. Coach Blue Bennett, a Nike Run Coach, provides you with suggestions on how hard or how fast you should go, so it’s a good idea to know what your 5k, 10k, marathon and recovery paces are.