| Barrhead to Noventa Vicentina | 1,003.77 mi (1,615.42 km) |
| Barrhead to Novi di Modena | 1,006.72 mi (1,620.15 km) |
| Barrhead to Novi Ligure | 955.99 mi (1,538.52 km) |
| Barrhead to Nuoro | 1,238.36 mi (1,992.95 km) |
| Barrhead to Occhiobello | 1,025.01 mi (1,649.60 km) |
| Barrhead to Oderzo | 1,006.48 mi (1,619.78 km) |
| Barrhead to Oggiono | 912.73 mi (1,468.89 km) |
| Barrhead to Olbia | 1,205.03 mi (1,939.30 km) |
| Barrhead to Oleggio | 903.32 mi (1,453.76 km) |
| Barrhead to Olgiate Comasco | 902.02 mi (1,451.67 km) |
| Barrhead to Olgiate Olona | 908.23 mi (1,461.66 km) |
| Barrhead to Omegna | 881.29 mi (1,418.31 km) |
| Barrhead to Opera | 931.62 mi (1,499.29 km) |
| Barrhead to Oppeano | 992.46 mi (1,597.21 km) |
| Barrhead to Orbassano | 909.40 mi (1,463.54 km) |
