Running how far?!

According to the Multimap map I've just printed off and measured my usual jogging route is 3.6 miles, which makes my time of 18:48 pretty damn impressive. So impressed was I at this unsuspected ability to run 5:12 miles back to back I checked on a different map.

This suggests that I actually ran a rather more realistic 2.5 miles , knocking out 7:36 minute miles which

a) sounds like something I could do and
b) still makes me rather happy