Heartland - Cassoday, KS

Cassoday, United States • 9-11 Oct 2026

Heartland - Cassoday, KS

Heartland is a multi-distance ultrarunning event held in and around Cassoday, Kansas. Courses run mostly on backcountry gravel and dirt roads through open range and the Flint Hills tallgrass prairie.

Distances offered:

  • 125 Mile graduate level with Eureka 30 mile loop, minimal course markings
  • 100 Mile out and back on backcountry gravel, 6,000 feet of climb
  • 100K out and back portion to Texaco Hill aid station
  • Teter Rock 100K out and back with a detour to Teter Rock
  • 50 Mile out and back to Teterville rd aid station
  • Marathon point to point with a 1.2 mile loop in Cassoday
  • Half Marathon out and back from Teterville rd aid station to Teter Rock

The 100-mile course is reported as roughly 99% gravel/dirt with about 1% paved road in Cassoday. Aid infrastructure includes 22 aid stations for the 100-mile race, additional stations for other distances, and a roving/mobile aid station on the 125-mile night section. Crew access and drop bag locations are provided at specified checkpoints; crew access points vary by distance. Pacers are allowed from the Matfield Green aid station toward the finish, with only one pacer at a time and standard pacer requirements.

The 125-mile route has limited markings and requires a supplied map and night reflective gear on the early section. Time limits apply to each race distance. Camping options are limited at Cassoday City Park; additional lodging and campgrounds are listed in nearby towns. Medical and weather risks are noted due to remoteness and variable Kansas conditions. Visit the organization's website for the most recent information.

Race information

125 mi
125 Miler
100 mi
100 Miler
100 km
Teter Rock 100k
100 km
100k
50 mi
50 Miler
26 mi
Marathon
13 mi
1/2 Marathon
Visit the organization's website for the most recent information.
Trail runs nearby
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