There are many of people who ask - how long do basketball games last? So in this forum I'll tell you the actual duration of a basketball game. It can vary depending on different factors. A standard NBA game lasts around 2 to 2.5 hours, including - stoppages, commercial breaks, and timeouts. However, unexpected factors like overtime periods, injuries, or video reviews may extend the game's length. Lower-level leagues and amateur competitions may have shorter game durations, typically around 1 to 1.5 hours, as they may not have as many commercial breaks or extensive stoppages.