The new Coros Pace 4 exemplifies those qualities: It’s clearly designed to be the committed runner’s best friend. Immediately noticeable is the tiny weight and size for a sports watch—a feathery 40 ...

It's hard to imagine having a good training routine or race day without a good running watch. Imagine you’re halfway up a long run, sweating hard, and you glance at your wrist only to realise you’ve ...

From Garmin to Apple, Coros to Polar, these are the best GPS watches for runners ...

When I failed to hit my desired time, I had to figure out whether I traveled too long of a route — or whether technology was to blame. Jason Margolis is the Globe’s climate science and transportation ...