| Bacau to Nuth | 999.91 mi (1,609.20 km) |
| Bacau to Oegstgeest | 1,075.98 mi (1,731.62 km) |
| Bacau to Oirschot | 1,031.75 mi (1,660.44 km) |
| Bacau to Oisterwijk | 1,037.05 mi (1,668.97 km) |
| Bacau to Oldebroek | 1,021.44 mi (1,643.85 km) |
| Bacau to Oldenzaal | 976.98 mi (1,572.31 km) |
| Bacau to Ommen | 1,001.72 mi (1,612.10 km) |
| Bacau to Oosterend | 1,025.36 mi (1,650.16 km) |
| Bacau to Oosterhout | 1,052.29 mi (1,693.49 km) |
| Bacau to Oosterwolde | 1,016.16 mi (1,635.35 km) |
| Bacau to Oostzaan | 1,062.66 mi (1,710.18 km) |
| Bacau to Opmeer | 1,064.42 mi (1,713.01 km) |
| Bacau to Oss | 1,026.26 mi (1,651.61 km) |
| Bacau to Oud-Beijerland | 1,073.73 mi (1,728.00 km) |
| Bacau to Oudenbosch | 1,065.66 mi (1,715.02 km) |
