Overtime in the NFL is 15 minutes.
NBA Overtime periods are 5 minutes long. there's no limit to the amount of overtime periods that can be played.
All NBA overtime periods last 5 minutes.
20 minutes per half, so 40 minutes in regulation. If it goes to overtime, each overtime period is 5 minutes.
There are a total of 90 minutes in a soccer game.
Usually an overtime lasts 5 minutes but it depends how many overtimes they go in to.