Quarryman Challenge 5k & 10 mile RaceSaturday, May 10th - Join the most unforgettable road race through historic Lemont.Register Now Opens in new windowHonoring Your Loved One with UsMemorial bricks, trees, and benches are available for purchase.Find Out More Opens in new windowMarch CORE Promotion - The Final FourPurchase a 12 Month CORE Membership and receive 4 bonus months for FREE! (terms and conditions apply).Join Now Opens in new windowSpring 2025 Programming Guide Now Available!Registration is open for residents and non-residents.Register today Opens in new windowAdvertising and Sponsorship OpportunitiesThousands of people visit The CORE, view our Program Guide, and attend our events every year. See your name there!Find out more! Opens in new windowNew? Create an account!Create a household with us to register for programs, memberships and more!Create Account Opens in new window Lemont Park District. Experience the Fun. Program Guide Online Registration Opens in new window Weather Updates Opens in new window Calendar of Events Opens in new window Skip back to main navigation