Prepare for an extraordinary running experience at the Hidden Gem Half Marathon, set to unfold on September 12, 2026, in the charming village of Flossmoor, IL. This celebrated 13.1-mile race has earned the prestigious CARA Race of the Year award two years in a row, recognized for its exceptional organization and vibrant community spirit that transforms the course into a festive celebration. Ideal for both seasoned athletes eyeing a personal best and casual runners seeking an engaging outing, the Hidden Gem Half Marathon offers a unique blend of challenge and charm. Typical race day conditions in mid-September feature pleasant highs around 78°F and comfortable lows around 57°F, with only a 15% chance of precipitation, providing an inviting climate for a fantastic run.

The Hidden Gem Half Marathon is a pure road race, guiding runners through Flossmoor's distinct, tree-lined neighborhoods with minimal backtracks. This USATF-certified course is renowned for being fast and flat, making it an excellent choice for those training for the Chicago Marathon or simply looking for a PR-worthy route. As you navigate the paved streets, you'll pass picturesque landmarks including Homewood-Flossmoor High School, Coyote Run Golf Course, historic homes, and a world-class sculpture park. What truly sets this race apart is the unparalleled community support, with residents lining the route, decorating their neighborhoods with themes, and providing enthusiastic cheers alongside musical groups, high school bands, cheerleaders, and DJs. Numerous aid stations along the course provide water, energy drinks, and snacks to keep you fueled.

The festive atmosphere continues beyond the finish line in downtown Flossmoor, where runners are greeted with well-deserved medals, great swag, and one of Illinois' largest cash prize pools. Celebrate your achievement with a complimentary "Hidden Gem" brew from Flossmoor Station Brewery at the lively "Kegs and Eggs" post-race party, open to runners, spectators, and volunteers alike. Conveniently located less than 30 miles south of Chicago, with ample free parking and METRA train access, the Hidden Gem Half Marathon is easily accessible, ensuring a smooth start to your unforgettable race day. Given its soaring popularity and reputation, early registration is highly recommended as this "hidden gem" of a race often sells out quickly.