| Grangemouth to Noventa Vicentina | 993.58 mi (1,599.01 km) |
| Grangemouth to Novi di Modena | 997.68 mi (1,605.61 km) |
| Grangemouth to Novi Ligure | 949.69 mi (1,528.38 km) |
| Grangemouth to Nuoro | 1,235.34 mi (1,988.09 km) |
| Grangemouth to Occhiobello | 1,015.18 mi (1,633.78 km) |
| Grangemouth to Oderzo | 994.67 mi (1,600.77 km) |
| Grangemouth to Oggiono | 904.49 mi (1,455.63 km) |
| Grangemouth to Olbia | 1,201.38 mi (1,933.43 km) |
| Grangemouth to Oleggio | 896.24 mi (1,442.35 km) |
| Grangemouth to Olgiate Comasco | 894.27 mi (1,439.20 km) |
| Grangemouth to Olgiate Olona | 900.78 mi (1,449.66 km) |
| Grangemouth to Omegna | 874.16 mi (1,406.83 km) |
| Grangemouth to Opera | 924.04 mi (1,487.10 km) |
| Grangemouth to Oppeano | 982.63 mi (1,581.39 km) |
| Grangemouth to Orbassano | 904.49 mi (1,455.64 km) |
