| Letchworth to Fisciano | 1,051.11 mi (1,691.60 km) |
| Letchworth to Fiuggi | 944.46 mi (1,519.96 km) |
| Letchworth to Fiume Veneto | 719.66 mi (1,158.18 km) |
| Letchworth to Fiumefreddo di Sicilia | 1,231.58 mi (1,982.03 km) |
| Letchworth to Fiumicino | 916.27 mi (1,474.59 km) |
| Letchworth to Flero | 651.66 mi (1,048.75 km) |
| Letchworth to Florence | 775.89 mi (1,248.67 km) |
| Letchworth to Floridia | 1,272.24 mi (2,047.48 km) |
| Letchworth to Foggia | 1,037.96 mi (1,670.43 km) |
| Letchworth to Foiano della Chiana | 821.62 mi (1,322.27 km) |
| Letchworth to Folignano | 903.26 mi (1,453.66 km) |
| Letchworth to Foligno | 865.79 mi (1,393.35 km) |
| Letchworth to Follonica | 807.83 mi (1,300.07 km) |
| Letchworth to Fondi | 975.52 mi (1,569.95 km) |
| Letchworth to Fontanafredda | 712.06 mi (1,145.95 km) |
