An Ironman or full-distance triathlon is a huge challenge, and for a first-timer, it can be utterly daunting. The biggest hurdle for most athletes isn't the distance itself, but getting the pacing wrong. Go out too hard, and you're in for a world of pain. But how do you pace a race that's so much longer than your longest training session? In this video, we break down the art and science of triathlon pacing. We'll explain the key tips and tricks for the swim, bike, and run, and give you specific