| Gheorgheni to Nuth | 938.94 mi (1,511.07 km) |
| Gheorgheni to Oegstgeest | 1,016.52 mi (1,635.94 km) |
| Gheorgheni to Oirschot | 971.47 mi (1,563.44 km) |
| Gheorgheni to Oisterwijk | 976.87 mi (1,572.13 km) |
| Gheorgheni to Oldebroek | 962.75 mi (1,549.40 km) |
| Gheorgheni to Oldenzaal | 918.38 mi (1,478.00 km) |
| Gheorgheni to Ommen | 943.30 mi (1,518.09 km) |
| Gheorgheni to Oosterend | 967.69 mi (1,557.34 km) |
| Gheorgheni to Oosterhout | 992.13 mi (1,596.68 km) |
| Gheorgheni to Oosterwolde | 958.54 mi (1,542.62 km) |
| Gheorgheni to Oostzaan | 1,003.68 mi (1,615.26 km) |
| Gheorgheni to Opmeer | 1,005.88 mi (1,618.81 km) |
| Gheorgheni to Oss | 966.41 mi (1,555.28 km) |
| Gheorgheni to Oud-Beijerland | 1,013.74 mi (1,631.45 km) |
| Gheorgheni to Oudenbosch | 1,005.38 mi (1,618.01 km) |
