Participants run along a trail during the Marine Corps Marathon (MCM) hosted Run Amuck at Marine Corps Base Quantico, Va., June 4, 2016. The Run Amuck is the MCM's messiest mud and obstacle course consisting of a four-mile trail with 21 challenges to include ammo can relay, low crawl, and a mud pit. The event also included a scaled down two-mile version of the course, the Mini Run Amuck. ( Marine Corps photo by Sgt. John Raufmann/Released)


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Keywords: amuck, corps, marathon, marine, marines, mcm, run, usmc, usmccomcam