Elite CrossFit athletes negotiate the obstacles on

Elite CrossFit athletes negotiate the obstacles on the "Battleground" during the 2018 Reebok CrossFit Games in Madison, Wisconsin, August 3, 2018. The CrossFit Games is the world’s premiere test to find the “Fittest on Earth.” The Games have been held every summer since 2007 and include a broad variety of different events that that focus on functional movements to quickly move large loads over long distances. For this year’s Games, the U.S. Marine Corps is sponsoring the “Battleground,” a high-intensity circuit course based on Marine Corps combat conditioning that included a simulated casualty carry, rope climb, distance run, and obstacle course. The Marine Corps partnered with CrossFit because its athletes share many of the same values as those exhibited by Marines, which led to the development of a national marketing relationship that allows the Marine Corps to reach a broad cross-section of high school and collegiate-aged CrossFit athletes.