The Sky Harbor Fitness trail is a scenic, indoor walkway inside Phoenix Sky Harbor International Airport. It spans 1 mile from Gate A30 through Gate D18 in Terminal 4.

Phoenix Sky Harbor International Airport sees more than 130,000 passengers arriving and departing daily. While it's among the busiest airports in the world, it wasn't always that way.

A walkway connecting Terminal 3 to Terminal 4 is under construction at Phoenix Sky Harbor International airport as international travel grows.