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Iron Will Grand Slam

Enterprise, United States • 1 Jun 2025

The Iron Will Grand Slam is an ultimate ultra-running challenge held in Enterprise, Kansas, featuring four grueling 100-mile races throughout 2025. Participants tackle the Earth Day Buckle Mania, Iron Will Backroads, Honey Badger Road Race, and the Iron Will race, spanning from April to September. The courses include gravel roads, rail trails, and demanding summer heat, testing runners' endurance and determination. For $600, runners gain entry to all four races, earning a unique finisher buckle at each event. An optional commemorative plaque is available to celebrate completing the Grand Slam, making this a prestigious and rewarding ultra-running series. 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

Iron Will Backroads is a challenging ultramarathon event held in Enterprise, Kansas, featuring 50K, 100K, and 100-mile races. The course consists of a 12.5-mile loop on gravel roads and rail trails, with multiple loops depending on the race distance. Participants will encounter aid stations approxim..

Iron Will 100 - Junction City, KS

Junction City - 17 mi from Enterprise

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The Iron Will 100 is a multi-distance ultramarathon event held in Junction City, Kansas, on September 13, 2025. Participants can choose from various race distances, including a 100-mile, 50-mile, 50K, 100K, and a 36-hour challenge. The course features a flat, fast river trail with significant shade,..

Earth Day Buckle Mania

Abilene - 5 mi from Enterprise

Earth Day Buckle Mania is a multi-day ultramarathon event held from April 25-27, 2025, in Abilene, Kansas. Participants can choose from 12-hour, 24-hour, or 48-hour races, all run on a certified 1.8228-mile paved loop through a scenic private park. Runners earn buckles for completing various distanc..