I would have to say that you got very, very lucky there. Not too many guys would've been able to get our scott-free in hostile territory, especially considering the (now) obvious maturity level of the gym members. Next time (if it behooves you), talk to the head guy there. If he's a stand up guy, he'll take care of that ordeal for you. If the guy in charge is a prick, well you've just found out why the guys at that gym act the way they do. You'd probably have to find a new jogging path after that.
It doesn't matter if you agree or disagree
... As long as I don't bore you and I spark a moment of thought, my goal is achieved
Queng leon queng tigre ecu tacacut, queca pa? - Pampangan Mandarigma Motto