I finished, but not in the spectacular fashion I imagined. It was not quite a walk, but nearly. Someone thrust a medal into my hand and I fell into my partners' arms. Good thing he was there, he got me to the St. Johns folk who had heaters, hot tea and space blankets. Most people who finished at about my time spent some time in the hypothermia room.
It may not have been fast. It may not have been the spectacular negative split race runners' are told to aim for. It may not have been pretty.
But I did finish it.