4 mph !
(.25 miles / 3 minutes) * (60 minutes / 1 hr) = (.25 * 60)/3 = 5 mph If you run a quarter mile in 3 minutes, your average speed is 5 mph.
5 mph (miles per hour)
10 minutes 10 seconds at a constant 5.9 mph, excluding speed changes or stops.
12 minutes and 1 second at a constant 5 mph, excluding speed changes or stops.
If you run at a speed of 12 mph, it would take you approximately 5 minutes to complete a mile.
Average speed is about 6 mph.
You need to run at an average speed of 15 mph.
(.25 miles / 3 minutes) * (60 minutes / 1 hr) = (.25 * 60)/3 = 5 mph If you run a quarter mile in 3 minutes, your average speed is 5 mph.
To run 1 mile in eight and a half minutes you must maintain a speed of 7.06 mph
5 mph (miles per hour)
If your average speed for the whole mile is 4.5 mph, your finishing time will be around 13 minutes 20 seconds.
If 15 MPH is 4 minutes, an estimate would be about 8 minutes, half the speed and double the time.
10 minutes 10 seconds at a constant 5.9 mph, excluding speed changes or stops.
12 minutes and 1 second at a constant 5 mph, excluding speed changes or stops.
If you run at 14.5 mph, you would cover one mile in approximately 4 minutes and 8 seconds.
If you run at a speed of 12 mph, it would take you approximately 5 minutes to complete a mile.
Running a mile in exactly 4 minutes equates to a speed of 15 MPH.