| Pont-y-pwl to Nuth | 389.01 mi (626.04 km) |
| Pont-y-pwl to Oegstgeest | 321.34 mi (517.15 km) |
| Pont-y-pwl to Oirschot | 358.04 mi (576.21 km) |
| Pont-y-pwl to Oisterwijk | 353.25 mi (568.51 km) |
| Pont-y-pwl to Oldebroek | 382.92 mi (616.25 km) |
| Pont-y-pwl to Oldenzaal | 425.96 mi (685.52 km) |
| Pont-y-pwl to Ommen | 404.94 mi (651.69 km) |
| Pont-y-pwl to Oosterend | 394.42 mi (634.75 km) |
| Pont-y-pwl to Oosterhout | 338.27 mi (544.39 km) |
| Pont-y-pwl to Oosterwolde | 403.50 mi (649.37 km) |
| Pont-y-pwl to Oostzaan | 340.15 mi (547.42 km) |
| Pont-y-pwl to Opmeer | 345.14 mi (555.44 km) |
| Pont-y-pwl to Oss | 366.00 mi (589.02 km) |
| Pont-y-pwl to Oud-Beijerland | 318.18 mi (512.06 km) |
| Pont-y-pwl to Oudenbosch | 324.28 mi (521.89 km) |
