Lace up your running shoes and prepare to join The Chevron Houston Marathon festival that supports many charities, including CanCare, Texas Children's Hospital, and The Leukemia & Lymphoma Society. As the largest single-day sporting event in the city, all runners get a chance to participate in the course map that runs together with a half marathon and a 5K race, where thousands of runners and spectators get to enjoy the fun signage, clocks, bottled water, Gatorade, aid stations, and exhilarating entertainment.