| Harrow Weald to Cortona | 812.17 mi (1,307.07 km) |
| Harrow Weald to Cosenza | 1,164.78 mi (1,874.54 km) |
| Harrow Weald to Cossato | 569.47 mi (916.48 km) |
| Harrow Weald to Costa Volpino | 619.88 mi (997.60 km) |
| Harrow Weald to Creazzo | 682.78 mi (1,098.83 km) |
| Harrow Weald to Crema | 628.55 mi (1,011.56 km) |
| Harrow Weald to Cremona | 651.96 mi (1,049.23 km) |
| Harrow Weald to Crevalcore | 710.43 mi (1,143.32 km) |
| Harrow Weald to Crispiano | 1,128.99 mi (1,816.94 km) |
| Harrow Weald to Crosia | 1,167.42 mi (1,878.79 km) |
| Harrow Weald to Crotone | 1,205.19 mi (1,939.56 km) |
| Harrow Weald to Cuneo | 617.27 mi (993.39 km) |
| Harrow Weald to Cuorgne | 563.37 mi (906.66 km) |
| Harrow Weald to Cusano Milanino | 602.78 mi (970.08 km) |
| Harrow Weald to Cutro | 1,203.47 mi (1,936.79 km) |
