Heartland - Cassoday, KS

Cassoday, United States • 10-12 Oct 2025

The Heartland event in Cassoday, Kansas, is a challenging ultra-running race featuring multiple distances: 125 miles, 100 miles, 100K, Teter Rock 100K, 50 miles, marathon, and half marathon. The course primarily follows backcountry gravel roads with minimal paved sections, winding through the scenic Flint Hills tallgrass prairie with rolling hills and about 6,000 feet of elevation gain on the 100-mile route. The 125-mile race includes a 30-mile loop to Eureka, KS. Aid stations and crew access points are strategically placed, with drop bag support available. The event celebrates its 25th anniversary with special finisher rings and awards, emphasizing a supportive, community atmosphere in a remote, natural setting. Visit the organization's website for the most recent information.

Race information

125 mi
125 Miler
100 mi
6000 m+
100 Miler
100 km
Teter Rock 100k
100 km
100k
50 mi
50 Miler
42 km
Marathon
21 km
1/2 Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

The Heartland 50 is an ultramarathon event held in Cassoday, Kansas, featuring 50-mile, 50K, and 25K distances. The race takes place on an out-and-back course primarily on backcountry gravel roads with less than a mile of pavement, winding through the scenic Flint Hills tallgrass prairie. The course..