For Lindsey Vonn, skiing is all about statistics. How fast she went, how much time passed between gate A and gate B, how different tuning helped that run go faster than the last, and how many hours she can get in to train, among thousands of other numbers the U.S. Ski team helps her track. Now kids...

Unlike many other ways to record activities, which may involve complicated GPS devices, apps on your phone, and downloading with complicated cables to your computer, EpicMix is a super easy and fun system to use. If you're skiing at any of the Vail Resorts with an EpicMix pass, your elevation, lift...