| Santo Tirso to Noventa Vicentina | 1,038.89 mi (1,671.93 km) |
| Santo Tirso to Novi di Modena | 1,004.70 mi (1,616.90 km) |
| Santo Tirso to Novi Ligure | 900.78 mi (1,449.66 km) |
| Santo Tirso to Nuoro | 931.65 mi (1,499.35 km) |
| Santo Tirso to Occhiobello | 1,037.97 mi (1,670.45 km) |
| Santo Tirso to Oderzo | 1,089.91 mi (1,754.03 km) |
| Santo Tirso to Oggiono | 941.17 mi (1,514.67 km) |
| Santo Tirso to Olbia | 933.87 mi (1,502.92 km) |
| Santo Tirso to Oleggio | 904.64 mi (1,455.87 km) |
| Santo Tirso to Olgiate Comasco | 923.18 mi (1,485.71 km) |
| Santo Tirso to Olgiate Olona | 916.93 mi (1,475.65 km) |
| Santo Tirso to Omegna | 898.57 mi (1,446.11 km) |
| Santo Tirso to Opera | 929.13 mi (1,495.29 km) |
| Santo Tirso to Oppeano | 1,022.22 mi (1,645.11 km) |
| Santo Tirso to Orbassano | 843.80 mi (1,357.96 km) |
