The Hidden Gem Half Marathon

The Hidden Gem Half Marathon takes place in Flossmoor, Illinois, a short drive south of Chicago. It offers a pure road half-marathon course with minimal backtracking through shaded Flossmoor neighborhoods, suitable for both serious runners and casual participants. The event is known for a warm, community atmosphere with enthusiastic residents along the route and a festive finish with complimentary beer.

Runners receive a coveted shirt, medal and gear bag, and can compete for one of Illinois’ largest cash prize pools. The Gem has earned CARA Race of the Year honors, offers ample free parking, METRA access, and strong sponsor support. The 2025 edition sold out. Visit the organization's website for the most recent information.