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 pavement, 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 well-distributed, supporting runners throughout. The event celebrates its 25th anniversary with special finisher rings and awards. It offers a rugged, remote atmosphere ideal for experienced ultra runners seeking a scenic yet demanding race. Visit the organization's website for the most recent information.