| Viana do Castelo to Orthez | 428.09 mi (688.95 km) |
| Viana do Castelo to Orvault | 523.51 mi (842.52 km) |
| Viana do Castelo to Osny | 732.23 mi (1,178.42 km) |
| Viana do Castelo to Ostwald | 932.39 mi (1,500.54 km) |
| Viana do Castelo to Ouistreham | 667.49 mi (1,074.23 km) |
| Viana do Castelo to Oullins | 734.45 mi (1,181.99 km) |
| Viana do Castelo to Outreau | 795.69 mi (1,280.53 km) |
| Viana do Castelo to Oyonnax | 784.65 mi (1,262.78 km) |
| Viana do Castelo to Ozoir-la-Ferriere | 742.14 mi (1,194.36 km) |
| Viana do Castelo to Pace | 563.17 mi (906.34 km) |
| Viana do Castelo to Palaiseau | 723.76 mi (1,164.78 km) |
| Viana do Castelo to Pamiers | 541.35 mi (871.22 km) |
| Viana do Castelo to Panazol | 580.66 mi (934.49 km) |
| Viana do Castelo to Pantin | 737.10 mi (1,186.25 km) |
| Viana do Castelo to Paray-le-Monial | 720.69 mi (1,159.83 km) |
