mountain bike

US extreme mountain bike athlete Ray Syron takes part in the Downhill Challenge Medellin 2018 in the Comuna 13 neighbouhood in Medellin, Colombia, on December 2, 2018. - The competition in Medellin set a new Guinness World Record for the longest track of Downhill Urbano. (Photo by Camilo GIL / AFP) (Photo credit should read CAMILO GIL/AFP/Getty Images)

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