Maybe if they win again, their victories will be something more than a sad trivia question: Who won the most celebrated race in long-distance running the year the results didn't matter?

WSJ: Winning Boston Never Felt So Empty

Fans who follow long-distance running are already familiar with Kenya's legendary success in the sport.

CNN: 'Kenyans' leads list of great running reads

Events like the Tough Guy and Tough Mudder are tightly controlled for safety reasons, but as with ordinary long-distance running there are injuries.

BBC: From marathons to mud running