GW
Great Western Half Marathon and 10K
Race Date
May 3, 2026
Location
Saint Charles, IL
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Difficulty
Rolling Hills
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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