7.5mph
A minimum pace of 5.5 mph is required.
60 (minutes/hour) / 9.5 (minutes/ mile) = 6.316 miles per hour
If it takes 4 minutes to run 1 mile then in 15 times as long (1 hour) you would run 15 miles. So the average speed must be 15 miles per hour.
340 meters per minute. (This speed seems too high for any person or animal actually to run.)
You walk
The treadmill pace to run a 10.24-minute mile and a half must be at least 8.8 miles per hour.
7.5mph
Set the treadmill at 7 mph.
5.5 mph
60/7 = 8.571 mph
A minimum pace of 5.5 mph is required.
60 (minutes/hour) / 9.5 (minutes/ mile) = 6.316 miles per hour
You would have to maintain an average speed of 4.3 miles per hour.
Your time for a mile will be 6 minutes 19.2 seconds.
In order to run an eight minute mile, one could run at a consist speed of 7.5 miles per hour. This requires a great deal of endurance.
The pace is a minimum of 7.5 miles per hour.