you know it's not necessary to run anything on the phone or get a phone computer, if all you want to do is just check the distance between your paths.

use either http://veloroutes.org/ or http://www.gmap-pedometer.com/

both are point and click maps on google that shows you the altitude, cadence, distance, time, etc, etc, etc....

just click the path you'll like to take, and compare between which routes you like most, or simply to find out how high/low/cadence was the steep hill you took