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Watch NBC’s Rio 2016 Olympic promo video

NBC Rio logo

The Rio 2016 Olympics begin in fewer than 550 days. The countdown is on.

The first Olympics to be held in South America open on Friday, Aug. 5, 2016. This year, many athletes begin paths toward qualifying for Rio.

For more Rio Olympic storylines, check out this package from the two-years-out date last summer.

Michael Phelps plans to compete in April

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