Iron Will Grand Slam
Enterprise, United States • 24 Apr 2026
Event overview
The Iron Will Grand Slam is a series of four 100-mile races held by the Iron Will series. The event base is listed as Enterprise, Kansas. The series includes four named 100-mile events: Earth Day Buckle Mania, Iron Will Backroads, Honey Badger Road Race, and Iron Will.
Format, fees and awards
Single-entry pricing covers all four races for a stated fee of $750. Each race awards a finisher buckle. Grand Slam finishers receive a custom 15" x 12" plaque that records their finish information. Because of the discounted series price, the organizer states there will be no refunds or deferrals. Registration closes on Wednesday, April 22. Visit the organization's website for the most recent information.