| Sever do Vouga to Oerlinghausen | 1,118.34 mi (1,799.79 km) |
| Sever do Vouga to Oestrich-Winkel | 1,016.54 mi (1,635.96 km) |
| Sever do Vouga to Offenburg | 960.51 mi (1,545.79 km) |
| Sever do Vouga to Oftersheim | 1,016.40 mi (1,635.74 km) |
| Sever do Vouga to Ohrdruf | 1,149.05 mi (1,849.21 km) |
| Sever do Vouga to Ohringen | 1,047.10 mi (1,685.14 km) |
| Sever do Vouga to Olbernhau | 1,244.76 mi (2,003.25 km) |
| Sever do Vouga to Olching | 1,094.72 mi (1,761.78 km) |
| Sever do Vouga to Oldenburg | 1,155.08 mi (1,858.92 km) |
| Sever do Vouga to Oldenburg in Holstein | 1,290.01 mi (2,076.08 km) |
| Sever do Vouga to Olfen | 1,064.62 mi (1,713.34 km) |
| Sever do Vouga to Olpe | 1,050.33 mi (1,690.35 km) |
| Sever do Vouga to Olsberg | 1,086.65 mi (1,748.79 km) |
| Sever do Vouga to Oranienburg | 1,308.68 mi (2,106.12 km) |
| Sever do Vouga to Ortenberg | 1,069.15 mi (1,720.62 km) |
