The Innsbrook Half Marathon
Race Day Weather
Comfortable conditions, steady pace
Runners will face a temperature rise from 53°F at the start to 67°F at the finish, with average humidity at 57% and a dew point of 48°F. With light wind from the north, it won't impact performance significantly. Hydration will be key as temperatures warm, but overall, conditions are favorable for a steady pace.
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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.
