The Innsbrook Half Marathon
Capped at 500 runners, this Missouri resort half rolls over five dams and past private lakes on a hilly mix of pavement and smooth gravel roads.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 28, 2026.
Quick facts
- Hard field cap of 500 half marathon entries with wave starts every 90 seconds.
- Mixed pavement and gravel loop inside a private resort, closed to outside traffic.
- Rolling terrain with five dam crossings makes this a slower course than a road half.
- Timing and the results archive run through Athlinks.
2026 The Innsbrook Half Marathon registration
Registration for the 2026 The Innsbrook Half Marathon runs through the official registration page at runsignup.com.
About the The Innsbrook Half Marathon
Run entirely inside the gates of Innsbrook Resort about an hour west of St. Louis, this is a small-field autumn half with a hard entry cap and a course most runners only see on race day. The organizers hold the field to 500 and release runners in waves of roughly 100 to 120, which keeps the narrow resort roads from bunching up. A 10K shares the start.
Course
One loop on a mix of pavement and smooth gravel resort roads, crossing five dams and passing more than 100 private lakes. The hills are constant rather than dramatic, so the climbing adds up faster than the profile suggests and even pacing is hard to hold. Start and finish are at Charrette Creek Commons.
Race-day weather
Late October in eastern Missouri usually means a cold start in the 40s warming into the 50s or low 60s by the finish. Fog off the lakes is common early. Peak fall color is part of the draw.
Past The Innsbrook Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, October 24, 2026 | Upcoming | — |
The Innsbrook Half Marathon FAQ
When is the The Innsbrook Half Marathon?
The 2026 The Innsbrook Half Marathon is on Saturday, October 24, 2026.
How do I register for the The Innsbrook Half Marathon?
Register for the The Innsbrook Half Marathon through the official registration link: marathonscout.com/go/innsbrook-half-marathon/register. It opens the race registration page at runsignup.com.
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