This 0.4-inch-thin-faced watch provides runners and cyclists with data including speed and heart rate (both average and max). Testers liked its post-training feedback ("up your interval speed!") but found the setup process too intensive. Plus, scrolling through its functions midrun proved to be a headache. [$340; polarusa.com]
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
The Interpreters We Left Behind
The Rise of Cyclocross
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