| Letchworth to Noventa Vicentina | 707.35 mi (1,138.36 km) |
| Letchworth to Novi di Modena | 705.63 mi (1,135.60 km) |
| Letchworth to Novi Ligure | 647.10 mi (1,041.41 km) |
| Letchworth to Nuoro | 924.88 mi (1,488.45 km) |
| Letchworth to Occhiobello | 726.86 mi (1,169.77 km) |
| Letchworth to Oderzo | 717.75 mi (1,155.11 km) |
| Letchworth to Oggiono | 609.52 mi (980.93 km) |
| Letchworth to Olbia | 891.91 mi (1,435.39 km) |
| Letchworth to Oleggio | 596.63 mi (960.19 km) |
| Letchworth to Olgiate Comasco | 597.30 mi (961.26 km) |
| Letchworth to Olgiate Olona | 602.57 mi (969.74 km) |
| Letchworth to Omegna | 574.86 mi (925.15 km) |
| Letchworth to Opera | 626.18 mi (1,007.73 km) |
| Letchworth to Oppeano | 694.57 mi (1,117.81 km) |
| Letchworth to Orbassano | 597.98 mi (962.36 km) |
