In this aerial photo provided by the Florida Keys News Bureau, contestants in the Seven Mile Bridge Run near Marathon, Fla., approach the span's highest point Saturday, April 5, 2014. The annual event attracted 1,500 runners who ran over the longest of 42 bridges over water that help comprise the Florida Keys Overseas Highway. The run began in 1982 to help herald the completion of a federally funded construction program that built 37 new bridges in the Keys.