Swim, bike, run; out of all three disciplines, running is one that feels the easiest during the triathlon. I don't have to think about a wetsuit, whether my goggles will get knocked off by another swimmer, whether I'm using the correct gearing when cycling up a hill or if I need to pedal or freewheel on a descent. I've found that triathletes don't really talk about running as much as they may talk about swimming or cycling and coming from an ultra-running background, I did wonder what I'd learn about running during Ironman training, so here goes.