| Ramnicu Valcea to Nuth | 940.97 mi (1,514.35 km) |
| Ramnicu Valcea to Oegstgeest | 1,027.36 mi (1,653.38 km) |
| Ramnicu Valcea to Oirschot | 977.82 mi (1,573.65 km) |
| Ramnicu Valcea to Oisterwijk | 983.79 mi (1,583.25 km) |
| Ramnicu Valcea to Oldebroek | 978.26 mi (1,574.36 km) |
| Ramnicu Valcea to Oldenzaal | 934.80 mi (1,504.41 km) |
| Ramnicu Valcea to Ommen | 960.38 mi (1,545.58 km) |
| Ramnicu Valcea to Oosterend | 988.13 mi (1,590.24 km) |
| Ramnicu Valcea to Oosterhout | 999.04 mi (1,607.80 km) |
| Ramnicu Valcea to Oosterwolde | 979.33 mi (1,576.09 km) |
| Ramnicu Valcea to Oostzaan | 1,017.23 mi (1,637.08 km) |
| Ramnicu Valcea to Opmeer | 1,021.73 mi (1,644.31 km) |
| Ramnicu Valcea to Oss | 975.40 mi (1,569.75 km) |
| Ramnicu Valcea to Oud-Beijerland | 1,021.45 mi (1,643.86 km) |
| Ramnicu Valcea to Oudenbosch | 1,011.36 mi (1,627.63 km) |
