Question

How long does it take to walk 10-15 miles?

Answer 1

It would take you approx 3 to 4 hours. 
The average person walks between 2 1/2 and 3 1/2 miles per hour. 

Hope this helps!

Answer 2

A Human runs 2.5 miles per hour.
When he/she runs it can get to 3 miles per hour.
It can take 5 hours or atleast 3.5 an hour.
Hope you get good marks and good luck!