Heartland - Cassoday, KS
Cassoday, United States • 9-11 Oct 2026
Heartland - Cassoday, KS
Heartland is a multi distance ultrarunning event near Cassoday, Kansas that runs mainly on backcountry gravel and dirt roads. The original 100 mile route contains less than one mile of paved surface. Much of the course travels open range and Flint Hills tallgrass prairie with wide views; the 100 mile course includes rolling hills and about 6,000 feet of climb.
Distances offered:
- 125 Mile
- 100 Mile
- 100K
- Teter Rock 100K
- 50 Mile
- Marathon
- Half Marathon
Most races are out and back; the 125 Mile begins on the Heartland 100 course and includes a 30 mile loop to Eureka. The Cassoday marathon is point to point with a 1.2 mile loop in Cassoday. The Teter Rock half and 100K routes use Teterville Road as a turnaround or aid station point. The 125 Mile option has limited course marking on the extra loop and a roving aid station through the first night.
Support logistics include multiple manned aid stations, additional roving aid for the 125 Mile, crew access points, and drop bag locations. Pacers are allowed from Matfield Green to the finish under specified rules. Cutoff and time limits apply per distance. Parking at the community building is limited and camping options are available nearby. October weather can vary; historic normals show mild days and cool nights and very limited shelter exists on the course. Visit the organization's website for the most recent information.