Hidden Gem Half Marathon
Race Day Weather
Warm start, rising temps ahead
Runners will face a steady temperature rise from 65°F at the start to a high of 81°F. Humidity will be high at 82%, suggesting a need for hydration throughout the race. With light winds and no rain expected, pacing should be conservative to manage the heat and humidity effectively.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Hidden Gem Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
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
