Iron Will Grand Slam
Enterprise, United States • 1 Jun 2025
The Iron Will Grand Slam is an ultimate ultra-running challenge held in Enterprise, Kansas, featuring four grueling 100-mile races throughout 2025. Participants tackle the Earth Day Buckle Mania, Iron Will Backroads, Honey Badger Road Race, and the Iron Will race, each offering unique terrain such as gravel roads and rail trails, and testing endurance in varying conditions including summer heat. For $600, runners gain entry to all four events, earning a finisher buckle at each and the option to purchase a commemorative plaque. This demanding series celebrates resilience and stamina, attracting elite ultra runners aiming to etch their names in ultra-running history. Visit the organization's website for the most recent information.