I'm not doing an official "Miles in 2012" challenge this year, but I am doing a Middle Earth miles challenge that will likely take me multiple years.

It starts in Hobbiton, goes all the way to Minas Tirith, then back to Hobbiton, split into stages. I'm currently on leg 2, and am at mile 253 between Rivendell and Lothlorien.
I'm such a geek.
THE LORD OF THE RINGS:
458 miles: Go from Hobbiton to Rivendell.
462 miles: Set out with the Fellowship from Rivendell to Lothlorien.
389 miles: Travel through Moria and down the Anduin from Lothlorien to Rauros Falls.
355 miles: Follow the path of Merry and Pippin from Rauros to Isengard.
484 miles: Follow the path of Aragorn, Legolas and Gimli from Rauros to Isengard.
470 miles: Follow Frodo and Sam on the quest from Rauros to Mt. Doom.
517 miles: Ride with Gandalf and Pippin from Isengard to Minas Tirith.
786 miles: Travel with Aragorn from Isengard to Dunharrow through the Paths of the Dead to Minas Tirith.
578 miles: Ride with Merry and the Rohirrim from Isengard to Dunharrow to Edoras to Minas Tirith.
138 miles: Follow Aragorn from Minas Tirith to the Morannon.
120 miles: Return for Aragorn’s crowning from the Morannon to Minas Tirith.
1625 miles: Take the road home with the hobbits from Minas Tirith to Hobbiton.