| Killingworth to Cortona | 1,013.30 mi (1,630.75 km) |
| Killingworth to Cosenza | 1,363.17 mi (2,193.82 km) |
| Killingworth to Cossato | 780.58 mi (1,256.22 km) |
| Killingworth to Costa Volpino | 814.68 mi (1,311.10 km) |
| Killingworth to Creazzo | 870.18 mi (1,400.41 km) |
| Killingworth to Crema | 830.33 mi (1,336.28 km) |
| Killingworth to Cremona | 853.08 mi (1,372.90 km) |
| Killingworth to Crevalcore | 907.05 mi (1,459.76 km) |
| Killingworth to Crispiano | 1,315.96 mi (2,117.83 km) |
| Killingworth to Crosia | 1,362.03 mi (2,191.98 km) |
| Killingworth to Crotone | 1,400.26 mi (2,253.51 km) |
| Killingworth to Cuneo | 839.15 mi (1,350.48 km) |
| Killingworth to Cuorgne | 779.24 mi (1,254.07 km) |
| Killingworth to Cusano Milanino | 806.71 mi (1,298.28 km) |
| Killingworth to Cutro | 1,399.43 mi (2,252.16 km) |
