| Ross on Wye to Nuth | 371.22 mi (597.42 km) |
| Ross on Wye to Oegstgeest | 300.18 mi (483.10 km) |
| Ross on Wye to Oirschot | 338.73 mi (545.13 km) |
| Ross on Wye to Oisterwijk | 333.72 mi (537.08 km) |
| Ross on Wye to Oldebroek | 361.24 mi (581.36 km) |
| Ross on Wye to Oldenzaal | 404.59 mi (651.13 km) |
| Ross on Wye to Ommen | 383.17 mi (616.65 km) |
| Ross on Wye to Oosterend | 371.77 mi (598.30 km) |
| Ross on Wye to Oosterhout | 318.62 mi (512.78 km) |
| Ross on Wye to Oosterwolde | 380.90 mi (613.01 km) |
| Ross on Wye to Oostzaan | 318.42 mi (512.45 km) |
| Ross on Wye to Opmeer | 322.85 mi (519.57 km) |
| Ross on Wye to Oss | 345.91 mi (556.70 km) |
| Ross on Wye to Oud-Beijerland | 298.07 mi (479.69 km) |
| Ross on Wye to Oudenbosch | 304.86 mi (490.63 km) |
