| Sever do Vouga to Orbetello | 1,016.38 mi (1,635.71 km) |
| Sever do Vouga to Oria | 1,358.72 mi (2,186.64 km) |
| Sever do Vouga to Oristano | 893.80 mi (1,438.43 km) |
| Sever do Vouga to Orta Nova | 1,251.60 mi (2,014.25 km) |
| Sever do Vouga to Orte | 1,076.20 mi (1,731.98 km) |
| Sever do Vouga to Ortona | 1,179.11 mi (1,897.59 km) |
| Sever do Vouga to Orvieto | 1,062.14 mi (1,709.36 km) |
| Sever do Vouga to Orzinuovi | 975.77 mi (1,570.35 km) |
| Sever do Vouga to Osimo | 1,132.61 mi (1,822.76 km) |
| Sever do Vouga to Ospitaletto | 984.80 mi (1,584.88 km) |
| Sever do Vouga to Ostuni | 1,353.64 mi (2,178.47 km) |
| Sever do Vouga to Ottaviano | 1,191.60 mi (1,917.69 km) |
| Sever do Vouga to Ovada | 903.27 mi (1,453.68 km) |
| Sever do Vouga to Ozieri | 909.00 mi (1,462.90 km) |
| Sever do Vouga to Paceco | 1,130.67 mi (1,819.63 km) |
