| West Islip to Collegno | 3,928.45 mi (6,322.23 km) |
| West Islip to Cologno al Serio | 4,004.63 mi (6,444.84 km) |
| West Islip to Cologno Monzese | 3,988.25 mi (6,418.46 km) |
| West Islip to Colorno | 4,054.97 mi (6,525.84 km) |
| West Islip to Comacchio | 4,140.12 mi (6,662.88 km) |
| West Islip to Comiso | 4,527.46 mi (7,286.24 km) |
| West Islip to Como | 3,971.12 mi (6,390.89 km) |
| West Islip to Concordia Sagittaria | 4,132.69 mi (6,650.92 km) |
| West Islip to Concorezzo | 3,988.79 mi (6,419.34 km) |
| West Islip to Conegliano | 4,105.38 mi (6,606.96 km) |
| West Islip to Conselice | 4,131.24 mi (6,648.59 km) |
| West Islip to Conselve | 4,108.75 mi (6,612.39 km) |
| West Islip to Conversano | 4,487.44 mi (7,221.84 km) |
| West Islip to Copertino | 4,554.96 mi (7,330.51 km) |
| West Islip to Copparo | 4,118.41 mi (6,627.94 km) |
