Everything You Need To Know About Rio 2016
The 2016 Games officially start in Rio today with the opening ceremony at the Maracana Stadium.
When does it start?
This will be held in South America for the first time — officially take place between 5 and 21 August.
The opening ceremony is at midnight GMT on Friday night.
An estimated 3 billion people will watch the ceremony, which has taken five years to produce and includes hundred of dancers and flamboyant costumes.
Who will be taking part?
There will be 10,500 athletes from a record 207 teams competing in Rio, m, while it will be the first time Kosovo and South Sudan have taken part in the Games.
With 554 athletes, the United States has the largest Olympic team, but 100m runner Etimoni Timuani is the only athlete from the South Pacific nation of Tuvalu.
The Rio Games will be the first to feature Olympians born since the year 2000 and the youngest is 13-year-old Nepalese swimmer Gaurika Singh.
Rio marks the return of golf and rugby to the Olympics.
Golf is returning after a 112-year absence but without more than 20 of its top players.
Rugby sevens will be making its debut at the Olympics, although rugby union featured regularly at the Games until 1924.