| Gebze to Cortona | 909.64 mi (1,463.93 km) |
| Gebze to Cosenza | 704.23 mi (1,133.35 km) |
| Gebze to Cossato | 1,117.05 mi (1,797.72 km) |
| Gebze to Costa Volpino | 1,029.10 mi (1,656.18 km) |
| Gebze to Creazzo | 959.36 mi (1,543.95 km) |
| Gebze to Crema | 1,042.28 mi (1,677.39 km) |
| Gebze to Cremona | 1,022.62 mi (1,645.75 km) |
| Gebze to Crevalcore | 963.81 mi (1,551.11 km) |
| Gebze to Crispiano | 638.69 mi (1,027.88 km) |
| Gebze to Crosia | 673.43 mi (1,083.77 km) |
| Gebze to Crotone | 662.56 mi (1,066.30 km) |
| Gebze to Cuneo | 1,136.65 mi (1,829.26 km) |
| Gebze to Cuorgne | 1,139.88 mi (1,834.45 km) |
| Gebze to Cusano Milanino | 1,068.43 mi (1,719.48 km) |
| Gebze to Cutro | 670.40 mi (1,078.91 km) |
