Alistair Brownlee is a two-time Olympic gold medalist, two-time ITU World Champion, and three-time European champion. He is the only person to have ever defended Olympic triathlon gold. He is also the first person to win the ITU Triathlon World Championship titles for Junior (2006), U23 (2008) and Senior (2009).

His 2012 and 2016 Olympic gold medals cemented his status as one of the sport’s best, but his greatest coup may yet be ahead of him with an Ironman World Championship in his sights. Just beyond that lies the Pho3nix SUB7 project, where he will attempt to set a new benchmark for how fast is humanly possible over the iron distance.

Alistair won the 2006 World Junior Championships and realized, after studying medicine for a term at Cambridge, that he wanted to pursue triathlon full time. In his first Olympics appearance in 2008, he was the fastest British competitor finishing in 12th. He only kept getting better: the following year he went on a rampage of wins and won his first ITU world championship, setting the stage for what would be a dominating era where he changed the way the Olympic distance is raced.

Alistair Brownlee https://en.wikipedia.org/wiki/Alistair_Brownlee

Alistair Brownlee: Double Olympic champion to focus on Ironman bid http://www.bbc.com/sport/triathlon/38292958 

Swim, bike, run by Alistair and Jonny Brownlee https://www.amazon.co.uk/Swim-Bike-Run-Triathlon-Story/dp/0241965845