At Extreme O, I won short course B, but missed having the fastest time between A and B by a decent (20 minute) amount.
http://www.gnc2016.org/uploads/3/4/8/4/3484343/ext...I suspect fitness was the biggest difference, although perfect running would close the gap a bit (but as Waller notes, the other guy could have mistakes to take out too) given my time loss on: corridor o (reentrant east of corridor reentrant), man made cave (couldn't see flag, didn't immediately crawl), aerial pickup overrun, aerial control bad bearing, and water cart water loss and slowness.
Fun stuff!