When
Sunday, September 20th, 2026
Where
4900 Byrnesville Rd, Jefferson County MO
Distance
5K
About this race
The Jefferson County Parks and Recreation Department is proud to host the annual Big River Run 10 Mile and 5K at the Northwest Sports Complex in House Springs, MO. The course offers runners a beautiful race with scenery through the Big River bottoms, horse ranches, and countryside views.
New in 2026 - Finisher Medals!
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