| Kocaeli to Collegno | 1,165.08 mi (1,875.02 km) |
| Kocaeli to Cologno al Serio | 1,068.41 mi (1,719.43 km) |
| Kocaeli to Cologno Monzese | 1,087.76 mi (1,750.58 km) |
| Kocaeli to Colorno | 1,027.75 mi (1,654.00 km) |
| Kocaeli to Comacchio | 938.07 mi (1,509.68 km) |
| Kocaeli to Comiso | 863.87 mi (1,390.27 km) |
| Kocaeli to Como | 1,100.48 mi (1,771.05 km) |
| Kocaeli to Concordia Sagittaria | 923.40 mi (1,486.07 km) |
| Kocaeli to Concorezzo | 1,085.78 mi (1,747.40 km) |
| Kocaeli to Conegliano | 951.26 mi (1,530.91 km) |
| Kocaeli to Conselice | 952.81 mi (1,533.40 km) |
| Kocaeli to Conselve | 960.59 mi (1,545.92 km) |
| Kocaeli to Conversano | 668.42 mi (1,075.72 km) |
| Kocaeli to Copertino | 623.83 mi (1,003.96 km) |
| Kocaeli to Copparo | 957.52 mi (1,540.98 km) |
