Hidden Gem Half Marathon
Sat, Sep 12 , 2026
1100 Douglas Avenue, Flossmoor, IL 60422
The Hidden Gem Half Marathon is a scenic 13.1-mile race through the tree-lined neighborhoods and welcoming community of Flossmoor, Illinois, offering runners a fast course and a vibrant local race-day atmosphere.
The Hidden Gem Half Marathon is a scenic 13.1-mile road race held each September in Flossmoor, Illinois, a charming suburb located about 30 miles south of downtown Chicago. The course winds through six distinct neighborhoods known for their tree-lined streets, historic homes, parks, and welcoming community atmosphere. Designed as a fast, mostly flat route with minimal backtracking, the race offers runners an enjoyable tour of the village while showcasing the character and beauty of Chicago’s Southland.
Recognized by the Chicago Area Runners Association as one of the region’s most well-organized and well-appreciated races, the event attracts both competitive athletes and recreational runners. Its early-September timing makes it a popular tune-up race for those preparing for the Chicago Marathon, while community support—residents cheering along the course and post-race celebrations—creates an energetic and welcoming race-day experience. With participant medals, cash prizes for top finishers, and convenient access via major highways and Metra rail service, the Hidden Gem Half Marathon has quickly become a favorite among runners in the Chicagoland area.