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10K races in St. Charles County (2026-27)
Updated
3 10k races are coming up in St. Charles County in the next 90 days; the next is MO' Cowbell Marathon/Half-Marathon/10K/5K on Sunday, November 8 in Saint Charles. 6 10k races are listed in St. Charles County for the next 12 months; the next one starts from $75.
All St. LouisSt. Louis & Inner Suburbs (13)West County & Chesterfield (11)St. Charles County (6)
By date
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Sun Nov 8 · 7:30 AM · Saint Charles · St. Charles County
5K10KHalf marathonMarathon
from $75Sign up ↗ -
Sat Dec 5 · 9:00 AM · Defiance · St. Charles County
1 mile5K10K
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Sat Dec 19 · 9:00 AM · St Peters · St. Charles County
1 mile5K10K9.3 miles
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Sat May 1 · 9:00 AM · Augusta · St. Charles County
1 mile5K10KHalf marathonTrail
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Sat May 15 · 7:00 AM · Saint Charles · St. Charles County
5K10KHalf marathonTrail
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Sat Jul 3 · 7:30 AM · St Charles · St. Charles County
5K10KHalf marathonTrail
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Quick answers
How many 10k races are in St. Charles County in the next 3 months?
3 10k races are listed in St. Charles County between November 7 and February 5. The next is MO' Cowbell Marathon/Half-Marathon/10K/5K on Sunday, November 8 in Saint Charles.
What is the cheapest 10K in St. Charles County right now?
Candy Cane Course - St. Louis on December 19 has the lowest listed entry fee in the next 90 days: $27. Prices are before the registration platform's processing fee.
When does the next early-bird price end for 10k races in St. Charles County?
Candy Cane Course - St. Louis: the 5K goes from $40 to $44 after November 29. 4 more of these 10k races publish a later price increase.
Are there 10k races in St. Charles County this weekend?
Yes, 1: MO' Cowbell Marathon/Half-Marathon/10K/5K (Sun).