1. Nike+ SportWatch GPS, $200
Simple enough for even the most techno-challenged buffoon, this GPS watch enables you to map your run and upload pace, distance and route data via the USB.2. Garmin Forerunner 910XT, $399
Like a triathalon coach on your wrist, this GPS-enabled device provides detailed swim metrics while monitoring your distance, pace, elevation and heart rate when you’re back on dry land.
Using tap-screen technology, this tracks your laps, splits, intervals and cooldowns with audible alerts for each. Hydration a problem on long races? You can set timers to remind you to drink up and re-fuel.4. Polar RCX5 G5 Multi Unit, $579
This amphibious timepiece continues to measure your heart rate even when you’re splashing through the ocean. Out of the drink, the race-pace setting helps you control your speed to maintain your splits and intervals.
Tissot’s touch-screen wizardry is packaged in a style that’s versatile enough to wear with your business suit or race gear. It delivers on functionality, too, thanks to the tide calculator and lap-measuring timer.