Summit County is quintessential Colorado, with small (but famous) towns nestled in a valley surrounded by towering peaks, with multiple ski resorts, vast tracts of National Forest and several large lakes.  Ask anyone which one town defines Summit County  and you'll likely hear, "Breckenridge!"  The area around this famous ski town also boasts one of the best networks of paved bike trails in the state, which is hugely popular on sunny summer weekends.  Even hard-core off-road riders can't help but enjoy the Tenmile Bike Path that runs 30 miles from Frisco through Copper Mountain, up and over Vail Pass and down into the town of Vail.  Happily, there are also plenty of jeep roads and singletrack trails challenging enough to entice die-hard mountain bikers.