Over the Top Cycling - The Boothby Challenge

A group of Seattle Randonneurs decided to create an unofficial challenge to honor the memory of one of their own, Don Boothby, who passed away before he got a chance to complete a 300k ride every month of the year, Hence the Boothby Challenge was created.
4 riders completed it in 2014

Randonneuring is long-distance unsupported endurance cycling. This style of riding is non-competitive in nature, and self-sufficiency is paramount. Participation in randonneuring events is part of a long tradition that goes back to the beginning of the sport of cycling in France and Italy. Friendly camaraderie and perseverance are the hallmarks of randonneuring.