| Letchworth to Collegno | 594.91 mi (957.42 km) |
| Letchworth to Cologno al Serio | 631.09 mi (1,015.64 km) |
| Letchworth to Cologno Monzese | 620.45 mi (998.52 km) |
| Letchworth to Colorno | 686.74 mi (1,105.21 km) |
| Letchworth to Comacchio | 758.35 mi (1,220.45 km) |
| Letchworth to Comiso | 1,264.70 mi (2,035.34 km) |
| Letchworth to Como | 599.68 mi (965.08 km) |
| Letchworth to Concordia Sagittaria | 731.40 mi (1,177.07 km) |
| Letchworth to Concorezzo | 619.08 mi (996.32 km) |
| Letchworth to Conegliano | 705.85 mi (1,135.95 km) |
| Letchworth to Conselice | 755.73 mi (1,216.22 km) |
| Letchworth to Conselve | 721.28 mi (1,160.80 km) |
| Letchworth to Conversano | 1,117.30 mi (1,798.12 km) |
| Letchworth to Copertino | 1,185.92 mi (1,908.55 km) |
| Letchworth to Copparo | 736.49 mi (1,185.26 km) |
