Miller using stair climber
U.S. Air Force Senior Master Sgt. Brandon Miller, of the 177th Intelligence Squadron, North Dakota Air National Guard, trains on stair climber equipment in the gym at the North Dakota Air National Guard Base, Fargo, N.D., June 30, 2021. Miller is preparing for the 107.3-mile version of the Maah Daah Hey Trail ultramarathon being held in badlands of western North Dakota July 31 through Aug. 1, 2021. He spends about three hours on the equipment at a time to train for the Maah Daah Hey Trail because the course has 11,905 feet of cumulative elevation gain, and the running path is a 12-inch wide dirt path leading up hills and down into steep gullies. (U.S. Air National Guard photo by David H. Lipp)

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Photo by: David H Lipp |  VIRIN: 210630-Z-WA217-1067.JPG