"Welcome to Airport Gyms, the most comprehensive and fastest growing community on the Internet for the FREE listing of airport gyms, airport exercise clubs, and airport fitness centers available in and around select popular US (and Canadian) airports today.
With the vast amount of airport based travel engaged in by active, exercise conscious travelers, and the long delays, long layovers, and early arrival times that arise when traveling (along with the current need to be at the airport hours early) - finding a gym in a airport, an airport gym, or a gym near a airport or airport exercise based club in or around your airport terminal may just be possible."
I think this website is absolutely fabulous for the frequent traveler. I do have to laugh at the "early arrival times" bit because that has not happened for me in quite some time. I wish there were more gyms in actual airports though because with long security lines these days, it's difficult to hop in a cab and go offsite to workout during an hour and a half layover. Hmmm...maybe I should go into business. Anybody want to join me?