The average distance a professional basketball player runs during a game is 2.9 miles. Jimmy Butler of the Chicago Bulls ran the most during the 2013-2014 season with an average of 3.1 miles per game.
The NBA uses a system call SportsVU that captures the movement of every player on the floor. The system comprises of six cameras aimed at the basketball court that tracks the positions of the ball and every player. It can measure distance, speed and time on court.
Coaches can use this information to gauge the current fitness levels of their players during a game to judge who is fatigued.