Born from the success of the Madison Marathon, this Ennis, MT event debuted in 2015 to meet the demand from dedicated marathoners who wanted to tackle two races in one weekend. It's perfect for Marathon Maniacs and ultra-committed runners looking to rack up multiple finishes in just 48 hours. The current route, introduced in 2020, features an impressive net elevation loss of 3,600 feet, making it one of the longest downhill road marathons in the world.