Biking is one of the most popular summer activities throughout Aspen and the Roaring Fork Valley. Aspen has mountain biking trails for all abilities, from paved paths to country dirt roads, to rugged single and double track trails.

Hop on the Rio Grande bike path, which is a paved, two-mile trail that runs along the Roaring Fork River out of town. The Government Trail spans almost 10 miles from Aspen to Snowmass Village and is one of Aspen's most popular mountain bike trails. Hit the trails on the mountain, and try to make it to the 11,212-foot summit of Aspen Mountain and catch a ride down on one of the trails. You also can transport your bike to the top on the Burlingame chairlift in Snowmass.

If you're seriously into biking, sign up for a ride to any of the 16 huts in the 10th Mountain Division Hut Association's system (970-925-5775; http://www.huts.org). Huts are located in the White River and San Isabel National Forests, in the midst of more than 300 miles of single-track trails and four-wheel-drive Forest Service dirt roads. The huts are adjacent to Holy Cross, Mt. Massive and Hunter Fryingpan Wilderness areas. The huts sleep up to 16 people, divided among three or four bunk rooms, and include woodburning stoves, propane burners, photovoltaic lighting, cooking and eating utensils, kitchen supplies, mattresses and pillows.

For more information on retail, rentals, and guided downhill bike tours, call: Blazing Adventures (800-282-7238 or 970-923-4544; http://www.blazingadventures.com); Aspen Velo Bike Shop (888-925-1495; http://www.aspenvelo.com); Hub of Aspen (970-925-7970); Aspen Sports (970-925-6331; http://www.aspensports.com)Timberline Bicycle Tours (970-920-3217; http://www.timberlinebike.com). For Silver Queen Gondola hours, call 970-925-1220.