| Kocaeli to Cortona | 934.66 mi (1,504.19 km) |
| Kocaeli to Cosenza | 729.33 mi (1,173.74 km) |
| Kocaeli to Cossato | 1,141.22 mi (1,836.62 km) |
| Kocaeli to Costa Volpino | 1,052.99 mi (1,694.63 km) |
| Kocaeli to Creazzo | 983.30 mi (1,582.47 km) |
| Kocaeli to Crema | 1,066.46 mi (1,716.30 km) |
| Kocaeli to Cremona | 1,046.90 mi (1,684.82 km) |
| Kocaeli to Crevalcore | 988.23 mi (1,590.41 km) |
| Kocaeli to Crispiano | 664.13 mi (1,068.81 km) |
| Kocaeli to Crosia | 698.60 mi (1,124.29 km) |
| Kocaeli to Crotone | 687.49 mi (1,106.42 km) |
| Kocaeli to Cuneo | 1,161.35 mi (1,869.02 km) |
| Kocaeli to Cuorgne | 1,164.16 mi (1,873.53 km) |
| Kocaeli to Cusano Milanino | 1,092.55 mi (1,758.29 km) |
| Kocaeli to Cutro | 695.32 mi (1,119.01 km) |
