Long gone are the days of plotting a route or a routine blind, guessing at the distance run or cycled, the calories expended or speeds achieved. Today, even amateur athletes have access to Olympic-level data. And we’re almost as competitive with sleep, tracking our rhythms and ever striving for better/more/deeper. Fitness trackers are the keepers of all the crucial stats—sleek, stylish smart watches capable of reading performance information and helping us work towards our goals, be they vertical or horizontal.

Ditch your Phone During Runs

Along with Sleep Scores and 24/7 Heart Rate, this hi-tech device keeps you connected with alerts to and allows you to reply to messages on Androids. You can also map your route and effort. Fitbit

Check Price

The first thing to figure out in buying a fitness tracker is what your needs are—and what your level of tech-comfortability is; not everyone wants or needs to know the most in-depth details of their own blood oxygenation. Some gadgets, while offering a lot of data, may prove overwhelming. And a device that links that to many other apps will also run more slowly.

Get News, Sport and Weather Too

Along with data including calorie burn and cardio function, this allows you to check what’s happening in the world, and control everything from Spotify playlists to your home devices, vocally. Fitbit

Check Price

If you’re training for long-distance endurance events, like a marathon, battery life will also be crucial. Check how long your fitness tracker lasts when using important apps and functions, such as GPS, not only how long it lasts when at rest.

For Users of All Technical Capabilities

Even if you’re not a big runner and don’t want to track your cycling stats (though it does those too), this pared-down product suits users keen to monitor sleep and other health data. Willful

Check Price

Do you want to be able to workout uninterrupted, or do you need to know if people are contacting you—and do you need to get back to them? Some Fitbits and smart watches will simply alert you of emails or texts, while others will enable you to briefly respond.