Still appearing ominously as a dotted line on maps, this 135-mile road was opened in 1957 as the only route to the national park. Now a secondary route, during the summer the road sees a steady flow of hikers, hunters, mountain bikers, anglers, bird-watchers, and adventurers. A highway in only the titular sense, Denali is basically a gravel road from Cantwell on George Parks Hwy to Paxson on Richardson Hwy.
As scenery and wildlife goes, this drive is absolutely stunning – you'll pass vast blankets of tundra and may spot grazing herds of caribou. Enjoy the views, because the road itself, though passable in a standard car, is slow going. Expect to average 30mph, taking six hours from end to end. Watch out for potholes and stretches of 'washboard' road if it's been raining.