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It'll be his third and final
He told the AP, "I think it will be a good time to retire, on top and just been dominating for so long."
Bolt has world records in both the 100-meter and 200-meter sprints. He has six gold medals, and has never lost a race of any kind at the Olympics.
There was talk of him trying out the long jump in 2016, but it's still unclear if he's going to follow through with it.
Bolt's record $9 million per year sponsorship deal with Puma runs through this year.