| Portet-sur-Garonne to Oegstgeest | 614.89 mi (989.57 km) |
| Portet-sur-Garonne to Oirschot | 580.20 mi (933.74 km) |
| Portet-sur-Garonne to Oisterwijk | 584.20 mi (940.18 km) |
| Portet-sur-Garonne to Oldebroek | 650.61 mi (1,047.06 km) |
| Portet-sur-Garonne to Oldenzaal | 658.88 mi (1,060.37 km) |
| Portet-sur-Garonne to Ommen | 662.81 mi (1,066.70 km) |
| Portet-sur-Garonne to Oosterend | 688.93 mi (1,108.72 km) |
| Portet-sur-Garonne to Oosterhout | 583.54 mi (939.12 km) |
| Portet-sur-Garonne to Oosterwolde | 691.32 mi (1,112.57 km) |
| Portet-sur-Garonne to Oostzaan | 636.18 mi (1,023.83 km) |
| Portet-sur-Garonne to Opmeer | 654.67 mi (1,053.59 km) |
| Portet-sur-Garonne to Oss | 600.69 mi (966.72 km) |
| Portet-sur-Garonne to Oud-Beijerland | 589.67 mi (948.98 km) |
| Portet-sur-Garonne to Oudenbosch | 575.90 mi (926.82 km) |
| Portet-sur-Garonne to Oudewater | 608.35 mi (979.05 km) |
