Great Western Half Marathon and 10K

Sunday, May 3, 2026

Saint Charles, Illinois

Race Day

Sunday, May 3, 2026

Course

Loop

Also Offers

10K run

Registration

Race Website

Official race information

☀

Avg High

64°F

☽

Avg Low

45°F

☂

Precip

0.14 in

🍃

Wind

13.4 mph

70% humidity·Based on 5-year historical data

APR 4

Lake Sara Dam Run

APR 4

Always Hope Easter Run 5K/10K/13.1 CHICAGO/EVANSTON

APR 4

Chi Town Half Marathon & 10K

APR 4

Lake Sara Dam Run 5K, 8 Mile & Half Marathon

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Race Day

Sunday, May 3, 2026

Course

Loop

Also Offers

10K run

Registration

Race Website

Official race information