There are only two summits above 14,000 feet that can be driven to in Colorado. One, Mount Antero, the 11th-tallest peak in Colorado at 14,276 feet, is accessible only by a gnarly 4x4 road. The other, Mount Evans, the 14th-highest at 14,271 feet, has a paved, albeit very twisty, road to within about 30 feet of the summit. The Mount Evans Scenic Byway is an easy drive to access from Denver; it starts just south of the town of Idaho Springs, about 35 miles west. There’s a visitor center (the fee for passenger cars is $10), about a mile off of Interstate 70, and from there the byway is 28 miles long and gains around 7,000 vertical feet. It’s the highest paved road in North America.