| Port Washington to Collegno | 3,940.35 mi (6,341.38 km) |
| Port Washington to Cologno al Serio | 4,016.11 mi (6,463.30 km) |
| Port Washington to Cologno Monzese | 3,999.79 mi (6,437.03 km) |
| Port Washington to Colorno | 4,066.57 mi (6,544.51 km) |
| Port Washington to Comacchio | 4,151.57 mi (6,681.30 km) |
| Port Washington to Comiso | 4,540.87 mi (7,307.82 km) |
| Port Washington to Como | 3,982.58 mi (6,409.35 km) |
| Port Washington to Concordia Sagittaria | 4,143.71 mi (6,668.65 km) |
| Port Washington to Concorezzo | 4,000.30 mi (6,437.87 km) |
| Port Washington to Conegliano | 4,116.42 mi (6,624.74 km) |
| Port Washington to Conselice | 4,142.79 mi (6,667.18 km) |
| Port Washington to Conselve | 4,120.06 mi (6,630.60 km) |
| Port Washington to Conversano | 4,499.36 mi (7,241.02 km) |
| Port Washington to Copertino | 4,566.95 mi (7,349.79 km) |
| Port Washington to Copparo | 4,129.84 mi (6,646.34 km) |
