I'm guessing you don't like Maths...the mathematical answer is w, which is an algebraic number meaning ''who cares?''
As tony_montana said, the answer is 4 minutes
Although I didn't see the answer until after I did it myself. I missed page 3 for some reason and only saw Lucky Maroon's post on page 4.
(where t= time to catch up and x= distance they ran)
For Malcolm and Reese:
(Which means incidentally they ran 0.12*4=0.48 miles
which is around 772.5 metres)