| Pontardulais to Nuth | 431.71 mi (694.77 km) |
| Pontardulais to Oegstgeest | 363.55 mi (585.08 km) |
| Pontardulais to Oirschot | 400.79 mi (645.01 km) |
| Pontardulais to Oisterwijk | 395.98 mi (637.27 km) |
| Pontardulais to Oldebroek | 424.81 mi (683.67 km) |
| Pontardulais to Oldenzaal | 468.07 mi (753.28 km) |
| Pontardulais to Ommen | 446.77 mi (719.00 km) |
| Pontardulais to Oosterend | 435.34 mi (700.62 km) |
| Pontardulais to Oosterhout | 380.98 mi (613.12 km) |
| Pontardulais to Oosterwolde | 444.50 mi (715.35 km) |
| Pontardulais to Oostzaan | 382.00 mi (614.77 km) |
| Pontardulais to Opmeer | 386.49 mi (622.00 km) |
| Pontardulais to Oss | 408.62 mi (657.61 km) |
| Pontardulais to Oud-Beijerland | 360.79 mi (580.64 km) |
| Pontardulais to Oudenbosch | 367.02 mi (590.66 km) |
