| Gouveia to Nuth | 967.14 mi (1,556.47 km) |
| Gouveia to Oegstgeest | 988.60 mi (1,591.00 km) |
| Gouveia to Oirschot | 977.33 mi (1,572.86 km) |
| Gouveia to Oisterwijk | 978.52 mi (1,574.77 km) |
| Gouveia to Oldebroek | 1,042.53 mi (1,677.79 km) |
| Gouveia to Oldenzaal | 1,066.44 mi (1,716.27 km) |
| Gouveia to Ommen | 1,060.84 mi (1,707.26 km) |
| Gouveia to Oosterend | 1,075.43 mi (1,730.74 km) |
| Gouveia to Oosterhout | 971.50 mi (1,563.48 km) |
| Gouveia to Oosterwolde | 1,081.05 mi (1,739.78 km) |
| Gouveia to Oostzaan | 1,013.16 mi (1,630.52 km) |
| Gouveia to Opmeer | 1,029.03 mi (1,656.06 km) |
| Gouveia to Oss | 997.05 mi (1,604.60 km) |
| Gouveia to Oud-Beijerland | 967.48 mi (1,557.00 km) |
| Gouveia to Oudenbosch | 959.16 mi (1,543.62 km) |
