| Buzau to Nuth | 1,041.55 mi (1,676.22 km) |
| Buzau to Oegstgeest | 1,123.64 mi (1,808.33 km) |
| Buzau to Oirschot | 1,076.34 mi (1,732.21 km) |
| Buzau to Oisterwijk | 1,082.03 mi (1,741.36 km) |
| Buzau to Oldebroek | 1,071.89 mi (1,725.03 km) |
| Buzau to Oldenzaal | 1,027.82 mi (1,654.11 km) |
| Buzau to Ommen | 1,053.08 mi (1,694.76 km) |
| Buzau to Oosterend | 1,078.93 mi (1,736.37 km) |
| Buzau to Oosterhout | 1,097.32 mi (1,765.97 km) |
| Buzau to Oosterwolde | 1,069.91 mi (1,721.86 km) |
| Buzau to Oostzaan | 1,112.02 mi (1,789.63 km) |
| Buzau to Opmeer | 1,115.25 mi (1,794.82 km) |
| Buzau to Oss | 1,072.55 mi (1,726.11 km) |
| Buzau to Oud-Beijerland | 1,119.36 mi (1,801.44 km) |
| Buzau to Oudenbosch | 1,110.14 mi (1,786.60 km) |
