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Race Overview
The Innsbrook Half Marathon is held each fall at Innsbrook Resort near Innsbrook, Missouri, about an hour west of St. Louis. Organized by Big River Race Management, it runs alongside a companion 10k on a hilly loop course that mixes paved roads with gravel trails past the resort's lakes and over several dams. The event dates back to around 2020 and caps its field at 500 runners across both distances.
WikipediaFAQ
When is the 2026 The Innsbrook Half Marathon?
The 2026 The Innsbrook Half Marathon will be held on Saturday October 24, 2026.
The Innsbrook Half Marathon Weather History
The Innsbrook Half Marathon Weather Averages
Average Temp: 52°, Average Low: 44°, Average High: 61°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 48° | 50° | 53° | 56° | 57° | 59° | 60° | 60° |
| Feel | 47° | 49° | 52° | 55° | 56° | 59° | 59° | 60° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 7mph | 7mph | 7mph | 6mph | 8mph | 8mph | 7mph |
| Dew | 42° | 42° | 42° | 42° | 43° | 42° | 43° | 43° |
| RunScore |  | | |  | | | | |
The Innsbrook Half Marathon 2025
Oct 25, 2025
Clearing in the afternoon with late afternoon rain.
Low: 52°, High: 60°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  55° | 57° | 58° | 59° | 59° | 60° | 60° | 60° |
| Feel | 55° | 57° | 58° | 59° | 59° | 60° | 60° | 60° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 7mph | 8mph | 10mph | 8mph | 10mph | 7mph | 5mph |
| Dew | 41° | 39° | 39° | 39° | 39° | 38° | 40° | 42° |
| RunScore | | | | | | | | |
The Innsbrook Half Marathon 2024
Oct 26, 2024
Clear conditions throughout the day.
Low: 44°, High: 64°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  51° | 55° | 58° | 60° | 62° | 63° | 64° | 64° |
| Feel | 51° | 55° | 58° | 60° | 62° | 63° | 64° | 64° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 3mph | 7mph | 11mph | 10mph | 5mph | 11mph | 8mph | 4mph |
| Dew | 43° | 42° | 40° | 40° | 42° | 41° | 41° | 40° |
| RunScore | | | | | | | | |
The Innsbrook Half Marathon 2023
Oct 28, 2023
Cloudy skies throughout the day with late afternoon rain.
Low: 42°, High: 48°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 42° | 42° | 43° | 43° | 44° | 44° | 45° | 45° |
| Feel | 39° | 38° | 39° | 40° | 40° | 42° | 41° | 42° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 7mph | 6mph | 5mph | 6mph | 4mph | 6mph | 5mph |
| Dew | 37° | 36° | 36° | 37° | 37° | 37° | 37° | 39° |
| RunScore | | | | | | | | |
The Innsbrook Half Marathon 2022
Oct 29, 2022
Clear conditions throughout the day.
Low: 37°, High: 69°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 45° | 47° | 55° | 61° | 64° | 68° | 69° | 69° |
| Feel | 45° | 47° | 55° | 61° | 64° | 68° | 69° | 69° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 1mph | 1mph | 0mph | 3mph | 5mph | 7mph | 7mph | 8mph |
| Dew | 44° | 46° | 49° | 46° | 48° | 48° | 49° | 48° |
| RunScore | | | | | | | | |
The Innsbrook Half Marathon 2021
Oct 30, 2021
Partly cloudy throughout the day.
Low: 44°, High: 62°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM | 4PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 49° | 50° | 52° | 55° | 57° | 60° | 62° | 62° |
| Feel | 45° | 50° | 52° | 55° | 57° | 60° | 62° | 62° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 9mph | 11mph | 10mph | 8mph | 7mph | 11mph | 13mph | 12mph |
| Dew | 48° | 48° | 48° | 49° | 48° | 47° | 47° | 46° |
| RunScore | | | | | | | | |