| Harrow to Cortona | 811.51 mi (1,305.99 km) |
| Harrow to Cosenza | 1,164.11 mi (1,873.46 km) |
| Harrow to Cossato | 568.73 mi (915.28 km) |
| Harrow to Costa Volpino | 619.31 mi (996.69 km) |
| Harrow to Creazzo | 682.27 mi (1,098.01 km) |
| Harrow to Crema | 627.91 mi (1,010.52 km) |
| Harrow to Cremona | 651.32 mi (1,048.19 km) |
| Harrow to Crevalcore | 709.82 mi (1,142.35 km) |
| Harrow to Crispiano | 1,128.44 mi (1,816.04 km) |
| Harrow to Crosia | 1,166.79 mi (1,877.77 km) |
| Harrow to Crotone | 1,204.55 mi (1,938.53 km) |
| Harrow to Cuneo | 616.38 mi (991.96 km) |
| Harrow to Cuorgne | 562.57 mi (905.37 km) |
| Harrow to Cusano Milanino | 602.12 mi (969.01 km) |
| Harrow to Cutro | 1,202.82 mi (1,935.75 km) |
