The Montreal 1976 Summer Olympics 100-meter dash.

The Rio 2016 Games are approaching—are you ready?

Who is the fastest human in history? What’s a pentathlon? And what do those Olympic rings symbolize anyway? With less than a month to go before the opening ceremony and the start of the 2016 Summer Rio Olympics, now’s the time to see just how much you know about Summer Olympic Games past. Shape up, take our quiz, and put your knowledge to the test!