CHICAGO, IL - OCTOBER 11: Chumba Dickson of Kenya crosses the finish line to win the Mens 2015 Bank of America Chicago Marathon on October 11, 2015 in Chicago, Illinois. (Photo by David Banks/Getty Images)
CHICAGO, IL - OCTOBER 11: Chumba Dickson of Kenya crosses the finish line to win the Mens 2015 Bank of America Chicago Marathon on October 11, 2015 in Chicago, Illinois. (Photo by David Banks/Getty Images)