This is a few years old, but just in case you guys missed it, Nerd Fitness posted an article with a breakdown of how many miles it would take to walk to Mordor. At the end, there is a spreadsheet so you can track your mileage as well. Just thought I'd share. If you are going to have a distance goal, this is a fun one.

http://www.nerdfitness.com/blog/2012/07/23/walking/