FYI...the new medallions are out and have been accessible since Jan 2015. However, the Challenges that are attached to the WDW races have different courses than the usual "Free 5K". With the "Free 5K" the start is at the bike rental area; with the challenge the start is now on the airstrip and the course markings are much easier to find/see/noticable.
Good Luck to all those running!
Good Luck to all those running!