NEW YORK: Sprint king Usain Bolt aims to crown his legacy with an unprecedented Olympic three-peat at the Rio Games, and to top that off by running the first ever sub-19 seconds 200 meters.

The long-striding Jamaican suggested he might not stop there, leaving open the chance he could extend his career beyond the 2017 season he has said would be his last.

Bolt has already swept the 100 and 200m sprints at the last two Olympics and added gold in the 4x100 relays in both Beijing (2008) and London (2012) with his Jamaican team mates.

"Just to defend my titles, to do the three-peat. That's my main goal. That's my main focus," Bolt told Reuters on Tuesday after helping sponsors Hublot open their biggest US fine watch store with a grand opening on Fifth Avenue.

"My secondary goal is to try and run sub-19," added Bolt, who set the world 200m record of 19.19 in 2009. "That's something I really want and I hope that everything goes smoothly and I can get it. That would be a big step for me."

In any event, Bolt said he would not treat 2017 like a farewell tour.

"I'm never going to come out and joke or be a joke in a season. I'm a winner. I believe in winning. I hate to lose. I will never come out and say it is a farewell tour. I will want to compete at my best, go to the championships and win again."

As for the legacy he hoped to leave the sport he has dominated for eight years, Bolt spoke about another Hublot spokesman, 75-year-old soccer great Pele.

"I met Pele today. For me, it was a dream come true," Bolt said. "I've always said I want to be the greatest. I want to be like Pele and Ali and all those guys.

"I want to be great. I want to be remembered as one of the greatest that have ever done the sport."