Well that depends on how fast it is going. I'm going to start at 5 mph go by 5 until I get to 80 mph 5 mph= 7.5 miles 10 mph= 15 miles 15 mph= 22.5 miles 20 mph= 30 miles 25 mph= 37.5 miles 30 mph= 45 miles 35 mph= 52.5 miles 40 mph= 60 miles 45 mph= 67.5 miles 50 mph= 75 miles 55 mph= 82.5 miles 60 mph= 90 miles 65 mph= 97.5 miles 70 mph= 105 miles 75 mph= 112.5 miles 80 mph= 120 miles