Riders take off for the mountain bike portion of the Tri-Wing Triathlon at Schriever Air Force Base, Colorado, Friday, July 21, 2017. Most contestants completed an arduous mile course around the perimeter of the base, while others opted for a mile course. The triathlon began with a run at the United States Air Force Academy June 3, 2017, a swim at Peterson AFB June 24 and concluded with the bike race at Schriever AFB.

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Photo credit: © Bob Collet / Alamy / Afripics
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Keywords: air, america, archive, armed, army, defence, force, forces, military, navy, reportage, schriever, service, serviceman, servicemen, soldier, states, triathlon, united, usa