ROFL @ Richyams...that was too funny!
I haven't heard of the triathalon, but I know someone who "ran" the Disney marathon. Although she said you could only run half of it since it was soooo crowded, you couldn't break into a run until you were half way through.
She said it was fun though and along one of the roads they had the Disney Villians
holding signs saying things like "Turn Back Now" and "You will never make it to the Finish!"
Good luck!