AKIPRESS.COM - Jamaican sprint champion Usain Bolt has made a firm decision on his Olympic future after wavering since the summer of 2013, CBC reports.

"It'll definitely be my last Olympics," the 17-time Olympic and world championships gold medalist said of this summer's Games in Rio de Janeiro.

"It's going to be hard to go four more years for me, to keep the motivation that I want, especially if I accomplish what I want to in Rio," he added.

In the past two Olympics, the 29-year-old Bolt has won six gold medals in the 100 meters, 200 and relays. He has 19 career medals, including 11 world championship gold and two silvers won as a 21-year-old in 2007.

Before he retires in the next four years, Bolt added, he wants to break the 19-second barrier in the 200 while planning to win three gold in Rio.

"That's my focus, that's what I want," he said. "And that's what I'm aiming for because that's my goal and that's my dream."

Previously, Bolt has vowed to retire after the 2017 world championships in London.