ChrisM - 2008-10-12 7:51 PM only one way to know.........
I third this. The snarky answer is "longer." The real answer is that there's no formula for calculating this. It really depends on a number of variables including how strong of a hill runner you are, how your overall fitness is, what the weather is like and how even the climb is throughout the 1.5 miles, to name a few.