A host of the world’s top athletes compete in obstacle course racing (OCR), outdoor competitions designed to test mental and physical fortitude. Guys who aren’t running through hilly terrain for sport do mud runs for their own reasons, like boosting fitness or putting some adrenaline behind their weight-loss efforts.

A host of the world’s top athletes compete in obstacle course racing (OCR), outdoor competitions designed to test mental and physical fortitude. Guys who aren’t running through hilly terrain for sport do mud runs for their own reasons, like boosting fitness or putting some adrenaline behind their weight-loss efforts. Whether you’re prepping for your first mud run or you’re a seasoned OCR vet, this workout plan will help you develop the necessary strength and conditioning to improve your time. “OCR is a test of your raw talent as an athlete,” says Hunter McIntyre, a top-ranked Spartan Race competitor.

“I try to find circuits that are going to break down my entire body because that’s what happens during courses.” Follow this intense training guide to breeze through your mud run and be ready for more at the finish line.Whether you’re prepping for your first mud run or you’re a seasoned OCR vet, this workout plan will help you develop the necessary strength and conditioning to improve your time. “OCR is a test of your raw talent as an athlete,” says Hunter McIntyre, a top-ranked Spartan Race competitor. “I try to find circuits that are going to break down my entire body because that’s what happens during courses.” Follow this intense training guide to breeze through your mud run and be ready for more at the finish line.