Crater Lake Rim Road, Crater Lake National Park, Oregon
First: Crater Lake was not made by a meteor; it’s the result of the eruption and subsequent collapse of Mount Mazama almost 8,000 years ago. It left behind steep rock walls and a deep lake — the deepest in North America — renowned for its intense blue color. The rim rises as much as 2,000 feet above the water. The road around the lake is about 30 mile long, and offers rolling terrain with about 4,500 feet of climbing and scenery spectacular enough to slow you down, says Todd Starnes, owner of tour company Bicycle Adventures. Most riders take a clockwise direction around the lake, but the counterclockwise route is just as beautiful.