Heartland
Heartland is listed for October 10, 2026 in Cassoday, Kansas, United States. Listed distances: 100 Miler, 100K, 50 Miler, Full Marathon, Half Marathon. Check registration status, official links, and the runner planning notes below, then confirm final details with the organizer.
About this race
Held near Cassoday each October since 2000 by the Kansas Ultrarunners Society, the Heartland: Spirit of the Prairie runs out-and-back across the Flint Hills tallgrass prairie on open gravel roads with barely a mile of pavement. Its ultras rise from 50-mile and 100K to 100 and 125 miles, capped at 30 hours for the 100, beside a marathon and half. Rolling hills stack near 6,000 feet of gain, and the shadeless prairie leaves runners exposed to sun, cool 44-to-70F air and relentless wind.
Is this race a fit?
These notes are generated from listed Sunday Marathon race facts. They are meant for shortlisting and planning, not as a replacement for official organizer instructions.
- Date And Schedule
Heartland is currently listed for October 10, 2026, which makes the October planning window important for training and travel. Recheck official timing before race week.
- Location Base
Plan around Cassoday, Kansas, United States, then verify the exact start area, finish area, packet pickup, and post-race exit route before booking non-refundable travel.
- Course Fit
Listed course signals include road surface. Use them to compare effort, pacing risk, and training fit before relying on the race for a specific goal.
- Entry Readiness
A registration path is listed; review entry rules, refund terms, and transfer policies before paying.
Key facts
- Date
- October 10, 2026
- Location
- Cassoday, Kansas, United States
- Start area
- Cassoday, KS — confirm the exact start with the organizer
- Events
- 100 Miler, 100K, 50 Miler, Full Marathon, Half Marathon
- Surface
- Road
- Official source
- Registration page & official site
- Listing status
- updated Jul 24, 2026
Before you register
- 1Confirm the race-day schedule
Verify the October 10, 2026 start times, packet pickup (collecting your race bib) and corral (your assigned start group) instructions on the official source before booking travel.
- 2Pin the exact start area
Use Kansas as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are 100 Miler, 100K, 50 Miler, Full Marathon, Half Marathon. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.
Runner reviews
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