The Gunksrunner Ultra Rankings arose, as most anything important does, out of a conversation on a training run several years ago. (By which I do not mean to imply that these rankings are in any way important.). We were discussing the USA Triathlon ranking system, by which any USAT member can receive a national ranking simply by finishing three races over the course of a year. And so the idea for the GUR was born: a comprehensive ranking of every finisher of every ultramarathon in the country.
Author Jason Friedman
Gunksrunner Ultra Rankings