In this photo, provided by the Florida Keys News Bureau, racers approach the top of the Seven Mile Bridge near Marathon, Fla., during the Seven Mile Bridge Run. The event, across the longest of 43 bridges that help comprise the Overseas Highway in the Florida Keys, attracted 1,500 competitors. The 30th annual Seven Mile Bridge Run will be held Saturday, April 9.

In this photo, provided by the Florida Keys News Bureau, racers approach the top of the Seven Mile Bridge near Marathon, Fla., during the Seven Mile Bridge Run. The event, across the longest of 43 bridges that help comprise the Overseas Highway in the Florida Keys, attracted 1,500 competitors. The 30th annual Seven Mile Bridge Run will be held Saturday, April 9.