Seth Cannello, 50th Force Support Squadron fitness and sports manager, briefs Schriever half-marathon participants at Schriever Air Force Base, Colorado, Oct. 6, 2017. Approximately 50 participants ran in the event this year. ( Air Force photo by Christopher DeWitt)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: -marathon, athletes, running