| Santo Tirso to Navodari | 1,874.15 mi (3,016.15 km) |
| Santo Tirso to Negresti-Oas | 1,619.63 mi (2,606.55 km) |
| Santo Tirso to Nehoiu | 1,755.16 mi (2,824.66 km) |
| Santo Tirso to Ocna Mures | 1,635.79 mi (2,632.55 km) |
| Santo Tirso to Odobesti | 1,790.37 mi (2,881.31 km) |
| Santo Tirso to Odorheiu Secuiesc | 1,704.55 mi (2,743.20 km) |
| Santo Tirso to Oltenita | 1,778.71 mi (2,862.56 km) |
| Santo Tirso to Onesti | 1,774.68 mi (2,856.07 km) |
| Santo Tirso to Oradea | 1,545.76 mi (2,487.66 km) |
| Santo Tirso to Orastie | 1,604.07 mi (2,581.50 km) |
| Santo Tirso to Oravita | 1,531.27 mi (2,464.35 km) |
| Santo Tirso to Orsova | 1,566.71 mi (2,521.37 km) |
| Santo Tirso to Otelu Rosu | 1,563.29 mi (2,515.88 km) |
| Santo Tirso to Otopeni | 1,747.72 mi (2,812.69 km) |
| Santo Tirso to Ovidiu | 1,871.95 mi (3,012.62 km) |
