with all the possible setbacks, such as having your goggles knocked off, losing your nutrition or getting a puncture. Also envisage how you think you'll feel at different stages of the race and prepare yourself for those feelings and be ready to overcome
Once upon a time long-distance triathlon was seen as something of a grail, holy or unholy, depending on how you felt about a 140-mile race. It was the preserve of the experienced, the specialists and, maybe, the slightly unhinged. Not any more