Rio 2016 Olympics on Facebook, Twitter, Instagram and Snapchat

Millions of fans will tap their favorite social networks during the coming weeks for live updates, highlights and on-the-ground reports from the Rio 2016 Olympics. Social sites are also where fans will turn to share the glory of the athletes' greatest achievements in real time. Social media's biggest companies all struck deals to better position their apps and services to showcase the action in Rio de Janeiro. Here's how to follow it all from afar using Facebook, Twitter, Instagram and Snapchat.