| Letchworth to Castrovillari | 1,148.11 mi (1,847.70 km) |
| Letchworth to Catania | 1,245.96 mi (2,005.19 km) |
| Letchworth to Catanzaro | 1,211.58 mi (1,949.86 km) |
| Letchworth to Cattolica | 813.86 mi (1,309.78 km) |
| Letchworth to Cava de' Tirreni | 1,051.60 mi (1,692.38 km) |
| Letchworth to Cavallino | 1,188.50 mi (1,912.71 km) |
| Letchworth to Cavarzere | 733.41 mi (1,180.32 km) |
| Letchworth to Cave | 934.74 mi (1,504.32 km) |
| Letchworth to Cavriago | 703.75 mi (1,132.57 km) |
| Letchworth to Cavriglia | 796.77 mi (1,282.29 km) |
| Letchworth to Cazzago San Martino | 641.80 mi (1,032.87 km) |
| Letchworth to Ceccano | 960.94 mi (1,546.49 km) |
| Letchworth to Cecina | 778.31 mi (1,252.56 km) |
| Letchworth to Cefalu | 1,183.99 mi (1,905.45 km) |
| Letchworth to Ceglie Messapico | 1,146.96 mi (1,845.86 km) |
