In my 2010 Rachael's Run road race forum posting, I suggested two methods of comparing races. I wanted to see how a race with two moderate to tough hills (Rachael's at the Air Force Academy) compared with a flat course (St Patrick's in downtown Colorado Springs). Both were 5K's. I suggested two methods: . "Method #1: Find results for the top five runners who ran in both races and compare the median times for each race. Method #2: Find the 25th percentile and 75th percentile results for ...