So, onto the nerdy stuff. Yee has been doing most of his running solo and averaging around 150km per week, significantly more than his 90-100km in triathlon mode, but significantly less than the likes of Kipchoge and Jacob Kiplimo, with whom he is about to share a start line. Instead, he supplements his training with easy bike rides and swims, in part to keep those disciplines ripe and in part to reduce the risk of injury.