Hidden Gem Half Marathon

Flossmoor, IL, USA · September 12, 2026
partly-cloudy-day64°·74° high·Breezy·Dry
8
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Race Day Weather

partly-cloudy-day
64°at start
82° high
Breezy
Dry

Warm afternoon, adjust pace early

Runners will face temperatures rising from 64°F to 77°F, accompanied by a steady wind from the SW at 10 mph. With humidity at 70% and a dew point of 59°F, athletes should start conservatively and consider hydration strategies. The chance of rain is low, allowing for a focus on pacing rather than weather interruptions.

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Pace Calculator

Distance: 13.1mi
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Race Info

The Hidden Gem is a pure road race with minimal backtracks through the distinct neighborhoods of Flossmoor, IL. It’s an ideal race for both the serious and casual runner. Anyone training for the Chicago Marathon will appreciate the September timing, while those with more modest goals are sure to enjoy an entertaining run through beautiful, shady neighborhoods with cheering residents lining the route. Source

Area Map

Course Map

FAQ

When is the 2026 Hidden Gem Half Marathon?

The 2026 Hidden Gem Half Marathon will be held on Saturday September 12, 2026.

What is the time limit for the Hidden Gem Half Marathon?

The time limit for the Hidden Gem Half Marathon is 3 hours.

What will the weather be like for the 2026 Hidden Gem Half Marathon?

The forecast calls for a high of 83°F and a low of 64°F with a 22% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
59°F
L:51° H:59°
RunScore
8
Conditions
Rain Freq
0%
0 of 2 yrs
Wind13mph
Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
51°/59°-
8
2024
clear-day
52°/59°-
8