The folks behind the Nautica South Beach Triathlon warn that the bike course could cause delays between 7:30 and 10:30 a.m. on Sunday.
The bike course starts on Ocean Drive at Fifth Street, goes south to Biscayne Street and north on Alton Road and east across the MacArthur Causeway. It returns to the beach on the Julia Tuttle Causeway before heading south on Alton road to Michigan Avenue and then Dade Boulevard. Then the course heads back up to Alton, west across the Tuttle, south to the MacArthur Causeway and back across the causeway to Miami Beach to finish near the start.
The MacArthur and Tuttle causeways will remain open, but with restricted lanes, so traffic is expected to be slow on both — and with extra pressure on the Venetian Causeway. Traffic also will be detoured around Alton Road at 17th Street.
So be safe out there.