London - Alistair Brownlee is confident of competing for a third triathlon gold at the 2020 Olympics in Tokyo following his back-to-back triumphs at the London and Rio Games.
Brownlee, who finished ahead of younger brother Jonny, 26, in Brazil, will be 32 by the time of the next Olympics and, no sooner had he got off the plane bringing the British team back from Rio at London's Heathrow Airport on Tuesday, he was already looking ahead to Tokyo 2020.
"I still think 32 should be an age to be competitive at," said Brownlee.
"I definitely want to do other things at some point -- like the Ironman or long-distance racing -- but it is too hard to say I wouldn't go to another Olympics.
"I will probably be there."
Such was Brownlee's lead in Rio, he was able to stroll to victory before collapsing over the finish line and later hugging Jonny after his brother came second.
"We both know how important we have been, pushing each other on over the years," Alistair Brownlee added.
"From everything, to just motivation to get out of the door in the morning -- if you know your little brother is going to go training you are going to go training, too -- to being able to travel the world together. That has been really important over the years.
"Over the last three months we have done almost every session together, even the very hard sessions where we are pushing each other as hard as we can.
"There is no-one else in the world that can do that with each other, but we have done that time and time again, four or five times a week in the last three months, and that has been absolutely crucial."