By all accounts, the performance of 35-year-old American triathlete Tim O’Donnell at the 2015 Ironman World Championships in Kona was a breakthrough – especially so on the bike. There was a discernable note of surprise in the race-day coverage when O’Donnell went strongly to the front on the way down from the turnaround at Hawi. And in interviews after the race, O’Donnell admitted to sharing in that surprise – at least a little. Suddenly, there he was in front. What now?