The person's pace was 6 mph or 10 minutes per mile.
12 miles per hour
15 minutes
10 mph
0.25 miles a minute, an average of 15 mph......................................
You would have to run 60 ÷ 8 = 7.5 mph.
Your average speed must be at least 8 mph.
You have to maintain a minimum average speed of 5.46 mph
15 mph, 4 minute mile
You have to maintain an average speed of 13.64 mph to achieve a 4 minute 24 second-mile time.
Just over 4.77 mph
You would have to maintain an average speed of 11.25 mph over the total distance of the race to achieve that time.
It depends on how fast the kid naturally runs. If they run really fast, it might be a 60 second half mile. If they run slow, it might be a 2-3 minute mile
8.35
5.5 mph