OK you march cross country to to Tower Hills where you pick up the Great East Road at the Undertowers. Then head east passing Greenholm and Michel Delving where you turn off toward Sarn Ford. This road merges with the Greenway which takes you to Tharbad where it changes its name to the Old South Road. Take this to the Fords of Isen in the Gap of Rohan and pass by Edoras. Somehow the name changes again to the Great West Road. Follow it along the Ered Nimrais and the Beacons of Gondor in Anorien until you reach Minas Tirith. Continue in the direction of the River Erui where the road acquires another alias: South Road. Behold, you are in Pelargir. Perhaps it's shorter, but its so much more complicated than the sea route.
Then of course the absolute shortest way is to call up Gwaihir & Co. and ask for a lift...
