Iron Will 100 - Junction City, KS

Junction City, United States • 19 Sep 2026

Iron Will 100 - Junction City, KS

The event offers multiple ultrarunning formats held at 5203 N HWY 57 in Junction City, Kansas. Distances included are:

  • 100 miles: 10 out and back laps on a flat river trail with about 75% shade.
  • 50 miles: 5 out and back laps.
  • 50K: a short out and back followed by three longer out and backs for roughly 31 miles total.
  • 36 hour: a timed option that covers multiple distances.

The course is described as a flat, fast river trail with substantial shade. There will be manned aid stations approximately every 5 miles.

Finishers in each event receive a finisher buckle, with the 100 mile buckle being the largest. Awards are given to the top female and male finishers in each event.

Cutoff times are applied by event: a 36 hour cutoff for the 100 mile, and 34 hour cutoffs for both the 50 mile and the 50K. The 36 hour option is structured so participants do not record a DNF; they receive the award corresponding to the mileage they achieve.

Shirt availability is tied to registration timing. Participants registered by August 27 are guaranteed a shirt; additional shirts may be ordered but sizes and availability are not guaranteed after that date. There are no refunds. Deferrals to the following year are allowed up to 30 days before the event. Changes of event or drop downs are not permitted after the races have started. Visit the organization's website for the most recent information.

Race information

100 mi
100 Miler
50 mi
50 Mile
50 km
50k
36 Hour
Visit the organization's website for the most recent information.
Trail runs nearby

A looped ultramarathon in Enterprise, KS offering 50K, 100K and a 100.35-mile nine-loop course on gravel roads and a rail trail. The course features a manned aid station at mile 6 of each loop and finisher buckles for finishers.

A community obstacle course in Junction City offering 2K and 4K routes with multiple obstacles, age divisions for kids and adults, participant T-shirts, awards by gender, and on-site food, water, a foam pit, and live DJ.

The 14th Annual Konza 25K and 10K take place at Konza Prairie Nature Trail in Manhattan KS on September 13, 2026, with tiered registration fees and fundraising options.

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