Colorado Runner - Colorado's running news, events and results source

When it comes to running, Joe Gray is a Jack of all Trades.  Whether it be a challenging mountain race, competitive cross country meet, or long distance road race, Gray is dominant and successful across each discipline.

As many of you know, the GPS running watch market has exploded. Back in the day, it was Garmin or nothing. Now with the likes of Tom Tom, Timex, Nike, Polar, Suunto and a whole host of apps for you phone, the choice can become overwhelming. Add into the mix all of the activity trackers, and what's a…