I mean, if triathletes are pretentious, what's LRC? Mostly middle aged white dudes who complain about stuff & are occasionally sexist/racist? The triathlete forums are a lot more civil/nicer so make of that what you will. I think there's some truth to triathletes being mostly upper class & that certainly comes with a set of attitudes/beliefs but running is a close second. We act like our sport is acceptable but if you're traveling for a handful of races every year you're dropping some serious money. We just don't have to pay to play as much as you do in triathlon. The athletes are still really good/impressive. Iden just dropped a 2:34 marathon at the end of an Ironman. The elite side of the sport is only getting better.