Iron Will Grand Slam
APR
24
2026
Take on the Iron Will Grand Slam: four 100 mile races in Enterprise, KS across spring to fall that test endurance and reward grit. Register by Apr 22 for the discounted series and earn buckles plus a custom Grand Slam plaque.
Fri 24 Apr 2026
Iron Will Backroads - 100...
Iron Will - 100 Miles
Honey Badger Road Race -...
Earth Day Buckle Mania -...
Always double-check with the organizer's website! This page may contain affiliate links.
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)
100 mi
Iron Will Backroads - 100 Miles
100 mi
Iron Will - 100 Miles
100 mi
Honey Badger Road Race - 100 Miles
100 mi
Earth Day Buckle Mania - 100 Miles