2017 USAF Marathon starts
Runners take off for the start of the 21st annual U.S. Air Force Marathon Sept. 16, 2017, at Wright-Patterson Air Force Base, Ohio. Over 13,500 runners participated in a 5K, 10K, half and full marathon supported by more than 2,400 volunteers. (U.S. Air Force photo/Wesley Farnsworth)

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Tags: AF Marathon
Photo by: Wesley Farnsworth |  VIRIN: 170916-F-AV193-001.JPG