HG
Hidden Gem Half Marathon
Race Date
Sep 12, 2026
Location
Flossmoor, IL
Course Info
USATF CertifiedTerrain
road
Elevation Gain
0'
Net Drop/km
-0.09 m
Separation
2.7%
USATF Certified Course
IL25024NM · The Hidden Gem Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Race Day Weather
5-year historical avgStart (Low)
59°
Afternoon (High)
78°
Warm — hydration strategy is key, start conservatively
0.1"
Precipitation
10 mph
Wind
68%
Humidity
Race Photos
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