| Matosinhos to Orbetello | 1,026.76 mi (1,652.40 km) |
| Matosinhos to Oria | 1,372.00 mi (2,208.02 km) |
| Matosinhos to Oristano | 910.64 mi (1,465.54 km) |
| Matosinhos to Orta Nova | 1,263.80 mi (2,033.88 km) |
| Matosinhos to Orte | 1,086.49 mi (1,748.54 km) |
| Matosinhos to Ortona | 1,189.50 mi (1,914.31 km) |
| Matosinhos to Orvieto | 1,071.86 mi (1,725.00 km) |
| Matosinhos to Orzinuovi | 978.73 mi (1,575.12 km) |
| Matosinhos to Osimo | 1,140.67 mi (1,835.73 km) |
| Matosinhos to Ospitaletto | 987.42 mi (1,589.10 km) |
| Matosinhos to Ostuni | 1,366.54 mi (2,199.23 km) |
| Matosinhos to Ottaviano | 1,204.93 mi (1,939.15 km) |
| Matosinhos to Ovada | 907.74 mi (1,460.86 km) |
| Matosinhos to Ozieri | 924.09 mi (1,487.19 km) |
| Matosinhos to Paceco | 1,149.92 mi (1,850.61 km) |
