Iron Will Grand Slam
Enterprise, United States • 24 Apr 2026
Event
The Iron Will Grand Slam is a series of four 100-mile races based in Enterprise, KS. The series combines four separate 100-mile events held on different dates during the year. Registration for the series closes on Wed, Apr 22. There are no refunds or deferrals for entries purchased as part of the discounted series.
Races and entry
The series entry fee is $750 for all four races. Finishers receive a finisher buckle from each race. Grand Slam finishers receive a 15" x 12" custom plaque that includes the finisher name and finishing times. Visit the organization's website for the most recent information.
- 100 miles - Earth Day Buckle Mania (April 24)
- 100 miles - Iron Will Backroads (May 16)
- 100 miles - Honey Badger Road Race (July 11)
- 100 miles - Iron Will (September 19)