| Siirt to Cortona | 1,605.21 mi (2,583.34 km) |
| Siirt to Cosenza | 1,385.86 mi (2,230.33 km) |
| Siirt to Cossato | 1,804.53 mi (2,904.11 km) |
| Siirt to Costa Volpino | 1,713.71 mi (2,757.95 km) |
| Siirt to Creazzo | 1,644.80 mi (2,647.04 km) |
| Siirt to Crema | 1,730.07 mi (2,784.27 km) |
| Siirt to Cremona | 1,711.52 mi (2,754.43 km) |
| Siirt to Crevalcore | 1,654.33 mi (2,662.39 km) |
| Siirt to Crispiano | 1,330.41 mi (2,141.08 km) |
| Siirt to Crosia | 1,357.14 mi (2,184.10 km) |
| Siirt to Crotone | 1,340.72 mi (2,157.67 km) |
| Siirt to Cuneo | 1,829.63 mi (2,944.51 km) |
| Siirt to Cuorgne | 1,828.52 mi (2,942.72 km) |
| Siirt to Cusano Milanino | 1,755.45 mi (2,825.13 km) |
| Siirt to Cutro | 1,348.17 mi (2,169.67 km) |
