the sheer distance you sometimes have to walk in some of the America's airports, the 5 airports with the longest walks

Dallas/Fort Worth International Airport (DFW), the second-largest airport in the United States, sprawls over nearly 17,000 acres, DFW’s longest distance from check-in to a gate is a whopping 2.16 miles!

Washington-Dulles International Airport, you might find yourself covering up to 1.62 miles. 

Houston’s George Bush Intercontinental Airport has situations where walking is your only option, and a 1.52-mile walk to its most distant gates. 

Denver International Airport has a 1.45-mile journey to its farthest gates. 

John F. Kennedy International Airport has up to 1.38 miles to its farthest gates.

https://www.rd.com/article/airports-with-longest-walks/