While it’s the farthest from Aspen proper, Snowmass is actually the largest of Aspen’s four mountains, with more than 150 miles worth of skiable trails—Longshot alone is famously more than two miles long. Snowmass also offers the most diverse mix of terrain, as you’re just as likely to find classic bowls and steeps as you are groomers. From the top, there are stunning views of the Maroon Bells (and just about everything else in the valley). Starting in December, the mountain is also home to a packed-out tubing hill. Go during the daytime with littles for a pleasantly fun ride or with grown-ups in the evening, when the ice freezes, for something a little more adventurous.