HalfRuns
HG

Hidden Gem Half Marathon

USATF Certified

Saturday, September 12, 2026

Flossmoor, Illinois

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USATFCourse

Course Information

USATF Certified Course

IL25024NM · Expires 2035

Certified Course Name

The Hidden Gem Half Marathon

Net Drop

-0.09

m/km

Separation

2.7%

start to finish

This course is relatively flat with minimal net elevation change. Loop course — start and finish are close together.

View USATF Course Map (PDF)

Race Details

Race Day

Saturday, September 12, 2026

Course

Loop

Registration

Register online

Race Website

Official race information

Historical Weather

☀

Avg High

78°F

☽

Avg Low

59°F

☂

Precip

0.07 in

🍃

Wind

9.5 mph

68% humidity·Based on 5-year historical data

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