GW
Great Western Half Marathon and 10K
Race Date
May 3, 2026
Location
Saint Charles, IL
Course Info
USATF CertifiedTerrain
road
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
10K run
USATF Certified Course
IL23005WR · Great Western HM
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Race Day Weather
5-year historical avgStart (Low)
45°
Afternoon (High)
64°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
13 mph
Wind
70%
Humidity
Race Photos
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