The shortest distance between 47 points—celebrating the centennial of the National Park Service by c
A researcher at the University of Pennsylvania decided to make it easier to celebrate the centennial of the National Park Service by proposing a travel route that is being billed as the shortest distance between all 47 national parks in the continental United States.
How to visit nearly every national park in one epic road trip
By Christopher Ingraham
The Washington Post
August 2, 2016