Their four quarters. It depends on if your talking about highschool, college,or pro.
A college basketball game is 40 minutes long. 20 minutes each half.
30 feet
middle school and high school are both 4 8 min quarters, college is 2 20 min half, and the NBA is 4 12 min quarters
It lasts just over an hour, but you'll be watching for like 50 mins