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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.

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

Earth Day Buckle Mania

Abilene - 5 mi from Enterprise

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Celebrate Earth Day with Buckle Mania in Abilene KS April 24 to 26, 2026. Choose 48 hour, 24 hour or 12 hour races and earn up to six buckles through 200 miles on a mostly shaded paved loop. Lodging and hot showers are included.

Iron Will Backroads

Enterprise

Iron Will Backroads is a looped gravel and asphalt ultramarathon in Enterprise Kansas with 50K, 100K and 100 mile options on a scenic 7.7 mile circuit and full aid stations. Enjoy hot food, pacers late in the race and finisher buckles.

Iron Will 100 - Junction City, KS

Junction City - 17 mi from Enterprise

Take on Iron Will 100 on Sep 19, 2026 in Junction City, KS with 100 mile, 50 mile, 50K and 36 hour timed options on a flat, fast river trail with about 75% shade and aid every five miles. Finishers earn buckles and top men and women win awa..