Published: Apr 19, 2012 7:28 PM EDT

MARATHON, Fla. (AP) - The longest bridge in the Florida Keys Overseas Highway is scheduled to close for about two hours this weekend for an annual footrace.

Local deputies are planning to stop vehicles at 6:45 a.m. Saturday for the Seven Mile Bridge Run. Traffic flow between the middle and lower Keys should resume at 9 a.m.

The event's field of 1,500 runners was filled in six minutes after online registration opened at 6 a.m. Feb. 21.

Paul Marmaro, a fitness instructor from Delray Beach, who has won the race eight times and continues to hold the course record of 32 minutes and 59 seconds set in 1998, is registered for the race. So is Jason Bodnar, a North Carolina dentist who has won five times despite dealing with a phobia of crossing bridges.