| Balchik to Oegstgeest | 1,246.89 mi (2,006.68 km) |
| Balchik to Oirschot | 1,197.79 mi (1,927.65 km) |
| Balchik to Oisterwijk | 1,203.71 mi (1,937.18 km) |
| Balchik to Oldebroek | 1,197.00 mi (1,926.39 km) |
| Balchik to Oldenzaal | 1,153.31 mi (1,856.07 km) |
| Balchik to Ommen | 1,178.79 mi (1,897.08 km) |
| Balchik to Oosterend | 1,205.83 mi (1,940.59 km) |
| Balchik to Oosterhout | 1,218.98 mi (1,961.75 km) |
| Balchik to Oosterwolde | 1,196.93 mi (1,926.28 km) |
| Balchik to Oostzaan | 1,236.36 mi (1,989.73 km) |
| Balchik to Opmeer | 1,240.46 mi (1,996.33 km) |
| Balchik to Oss | 1,195.11 mi (1,923.34 km) |
| Balchik to Oud-Beijerland | 1,241.32 mi (1,997.72 km) |
| Balchik to Oudenbosch | 1,231.38 mi (1,981.71 km) |
| Balchik to Oudewater | 1,227.04 mi (1,974.72 km) |
