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Iron Will Grand Slam

Enterprise, United States • 24 Apr 2026

Iron Will Grand Slam

The Iron Will Grand Slam is a series of four 100-mile races based in Enterprise, KS. The series groups four separate 100-mile events held across the season. Registration for the series closes on Wed, Apr 22 at 11:59 PM CT. The event information lists a local address of 619 S Lincoln in Enterprise, KS.

Races, entry and awards

  • 100 miles - Earth Day Buckle Mania (Apr 24)
  • 100 miles - Iron Will Backroads (May 16)
  • 100 miles - Honey Badger Road Race (Jul 11)
  • 100 miles - Iron Will (Sep 19)

Entry for all four races is offered as a single purchase for $750. There are no refunds or deferrals for the series. Each individual race awards a finisher buckle. Grand Slam finishers receive a custom 15" x 12" plaque that includes the finisher’s name and finishing times. Visit the organization's website for the most recent information.

United States Kansas Enterprise

Race information

Registration Facebook
100 mi
Earth Day Buckle Mania - 100 Miles
100 mi
Honey Badger Road Race - 100 Miles
100 mi
Iron Will - 100 Miles
100 mi
Iron Will Backroads - 100 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Iron Will Backroads

Enterprise

Tackle gravel roads and a scenic rail trail in Enterprise, KS with 50K, 100K, or 100 mile looped courses. Enjoy manned aid stations, finisher buckles and the charm of a historic train along the route for a true ultrarunning adventure.

Iron Will 100 - Junction City, KS

Junction City

Iron Will 100 in Junction City KS offers 100 mile, 50 mile, 50K and 36 hour options on a flat, fast river trail with about 75% shade. Frequent aid stations, finisher buckles and a supportive out and back course make this a memorable ultra.