Originally Posted by
Tide_from_PAE
Depending on when you're in ATL, the walkway between Concourse E and Concourse F will be nearly empty and a good place to run. You could combine this with the underground tunnel from T to E. I've walked to every gate in ATL on a 3+ hour layover before and it's a nice tour of the airport.
Alternatively you could do as was suggested in an earlier thread and visit every SkyClub in ATL.
^ Perfect place for the OP's mission. E-F connector is a ghost town. Do laps around there and no one would care. No ATL first timers, or confused pax looking for the escalators around A-B-C.