Get ready for a spooktacular day of fun and fitness at The Great GO! St. Louis Halloween Race on Saturday, October 17, 2026! This exciting event will take place in the vibrant city of St. Louis, Missouri, and offers something for everyone, including a thrilling half marathon, a challenging 10K, a fun 5K, a 1-mile fun run, and even a 1-mile costume dog walk. Whether you’re a serious runner or a family looking to enjoy a festive day out, this race is a fantastic way to celebrate the Halloween season.

Join fellow participants in picturesque Eureka, MO, as you run through the scenic routes, and enjoy partnerships with local businesses that enhance this unforgettable experience. Post-race, indulge in plenty of candy, sip on refreshing 4 Hands beer (for those over 21), and explore the lively festival area in Eureka's business district. Plus, don’t miss your chance to showcase your creativity in the Great GO! St. Louis Halloween Race Costume Contest! Mark your calendars for this can't-miss fall event, and get ready for a day filled with excitement, costumes, and community spirit!