The Innsbrook Half Marathon
Race Day Weather
Comfortable temps, warming through the race
Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 64°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
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Race Info
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.
