| Letchworth to Cortona | 825.65 mi (1,328.75 km) |
| Letchworth to Cosenza | 1,178.20 mi (1,896.13 km) |
| Letchworth to Cossato | 584.40 mi (940.50 km) |
| Letchworth to Costa Volpino | 631.74 mi (1,016.68 km) |
| Letchworth to Creazzo | 693.49 mi (1,116.06 km) |
| Letchworth to Crema | 641.76 mi (1,032.81 km) |
| Letchworth to Cremona | 665.10 mi (1,070.37 km) |
| Letchworth to Crevalcore | 722.87 mi (1,163.34 km) |
| Letchworth to Crispiano | 1,140.44 mi (1,835.36 km) |
| Letchworth to Crosia | 1,180.19 mi (1,899.33 km) |
| Letchworth to Crotone | 1,218.07 mi (1,960.30 km) |
| Letchworth to Cuneo | 634.68 mi (1,021.42 km) |
| Letchworth to Cuorgne | 579.31 mi (932.32 km) |
| Letchworth to Cusano Milanino | 616.34 mi (991.90 km) |
| Letchworth to Cutro | 1,216.50 mi (1,957.76 km) |
