In 19 days · Sat, Sep 12, 2026
Don't let race day sneak up
One email during race week. That's it.
When
Saturday, September 12th, 2026
Where
2800 Flossmoor Rd, Flossmoor IL
Distance
Half
Typical weather
60–77°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2025
58–82°F
dry
2024
61–86°F
dry
2023
55–68°F
dry
2022
54–62°F
rain
2021
69–87°F
dry
2020
63–72°F
rain
2019
67–84°F
rain
2018
58–77°F
dry
2017
55–73°F
dry
2016
57–76°F
dry
Best months to race in Illinois →
About this race
The Hidden Gem Half Marathon 2026
Date: September 12, 2026
Location: 2800 Flossmoor Rd, Flossmoor, IL
Event Highlights
- The Gem is BACK!
- CARA 2025 Race of the Year
- Registration Opens: April 1
- Finish Requirement: Runners must finish the race in three hours (No Walkers).
More Information
For more details, visit HERE
Registration Link
Sign up for the race at this link.
Course map
Train with a club
Run clubs near Flossmoor to train with before race day.
See all run clubs near Flossmoor →
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.