There's a 400 and a 50 that run para to 96. I'm not sure which is race legal but the guy who gave me my reflective strips, Louis-Eric, used the alternative. His tracker would show where he went.
Must be the 50. I remember the 5s and 0s. I was reaching out to Dan & George to share the advice after TC got hit. They were worried about not following the route and couldn't reach Nathan.
500, I think.