Suunto's Ambit3 is definitely one of the most comprehensive sports-specific watches out there and now they've added a "Vertical" model that helps you plan and track elevation gain. Whether you're on foot or on a bike, the new model has a route planner with topographic maps, altitude profiles and total ascent visualization, real-time hill incline percentage, Bluetooth Smart power sensor compatibility, and much more. You also get the standard Ambit3 features such as built-in GPS, speed/pace/distance functionality, altitude, compass, and smartphone notifications via Suunto's Movescount app. 

$469, suunto.com