| Royston to Cortona | 822.27 mi (1,323.31 km) |
| Royston to Cosenza | 1,174.74 mi (1,890.56 km) |
| Royston to Cossato | 581.73 mi (936.20 km) |
| Royston to Costa Volpino | 627.75 mi (1,010.27 km) |
| Royston to Creazzo | 689.04 mi (1,108.91 km) |
| Royston to Crema | 638.32 mi (1,027.27 km) |
| Royston to Cremona | 661.62 mi (1,064.78 km) |
| Royston to Crevalcore | 719.09 mi (1,157.26 km) |
| Royston to Crispiano | 1,136.18 mi (1,828.51 km) |
| Royston to Crosia | 1,176.46 mi (1,893.33 km) |
| Royston to Crotone | 1,214.38 mi (1,954.36 km) |
| Royston to Cuneo | 633.17 mi (1,018.98 km) |
| Royston to Cuorgne | 577.11 mi (928.76 km) |
| Royston to Cusano Milanino | 613.05 mi (986.61 km) |
| Royston to Cutro | 1,212.87 mi (1,951.93 km) |
