|Distance||51 miles (83 km)|
Ferries from Koufonisia to Syros cover the 51 miles (83 km) long route. There are direct ferry services available.
Passengers board the ferry most frequently from Port of Koufonisia, which is located around 0.2 miles (389 m) away from the city centre, and they get off the ferry at Port of Syros, located 3.7 miles (5.9 km) away from the city centre.
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