Real Potties&.
I know many on the list have issue with the Porto-lets or the lines associated with the little green buildings. In the past I have published a list of real restrooms passed on the run. Many folks have not really been concerned about anything past MK since that was the half point and the nervous bladder has been taken out of the equation after that. But in 2013, the half is now in AK so I thought I would repost the list for those who prefer a real room.
First, we miss Epcot at mile 2.5 so those are now gone.
MK (All course left, except as noted)
Tomorrowland. We turn left just after Stitch and the facility is on course left. These are busy but have never seen a line out the door.
FantasyLand Pooh in the facility near Pooh (I know it's there, just not sure it's open since it is immediately after the previous one)
FantasyLand Next to Pinocchio Village House (course right)
Frontierland In the breezeway between Frontierland and Adventureland.
Frontierland - just after Pecos Bills.
AK
Asia Near the Flights of Wonder Course left
Asia Near Everest - Course Left
Dinoland Just after Finding Nemo Course Left
McD We pass close but not sure how accessible Course Right
WWoS
Near the Track and Field Track
In the middle of the ball field quad.
DHS
At the far end of Street of America as we turn onto Commissary Lane Course right
At the end of Commissary as we pass towards Mickeys Sorcerers Hat Course Right
At the gate end of Hollywood as we turn to go backstage - Course left
Epcot
Morocco
American Adventure
Germany
Hope this helps. I cannot say with 100% certainty that a cast member will not re-direct a runner from some of the ones a little off course, but I have seen folks at most of these through the years. I know there are others but these are the ones on or very near the course. I am not 100% sure of the WWoS facilities since these are not in use more often than not.