Powered by a Spartan SGX Certified Coach, FLATline OCR Training is the pinnacle of Obstacle Course Training in the Naperville area. Located in Plainfield, Hart Fitness LLC boasts a gym as specialized in OCR as the program that we coach. FLATline OCR Training runs 5 classes throughout the week, the entire year long (excluding some holidays and race weekends). FLATline OCR's SPRING AND SUMMER SCHEDULE includes 6:30PM MONDAYS & WEDNESDAYS AT BLACKWELL FOREST PRESERVE, 5AM AND 7PM THURSDAYS AT HART FITNESS & 7AM SATURDAYS ALSO AT HART FITNESS. And since OCR Races like Spartan Race, Tough Mudder, Savage Race and Warrior Dash aren't run inside, you can rest assured that our training won't be entirely be either which is why besides using the outdoors of our grounds at Hart Fitness, we travel to Mt. Hoy at Blackwell Forest Preserve throughout the week as well.