| Ortahisar to Nuth | 1,640.29 mi (2,639.79 km) |
| Ortahisar to Oegstgeest | 1,727.76 mi (2,780.57 km) |
| Ortahisar to Oirschot | 1,677.88 mi (2,700.28 km) |
| Ortahisar to Oisterwijk | 1,683.91 mi (2,709.99 km) |
| Ortahisar to Oldebroek | 1,678.49 mi (2,701.26 km) |
| Ortahisar to Oldenzaal | 1,634.88 mi (2,631.08 km) |
| Ortahisar to Ommen | 1,660.39 mi (2,672.14 km) |
| Ortahisar to Oosterend | 1,687.55 mi (2,715.84 km) |
| Ortahisar to Oosterhout | 1,699.15 mi (2,734.52 km) |
| Ortahisar to Oosterwolde | 1,678.66 mi (2,701.54 km) |
| Ortahisar to Oostzaan | 1,717.62 mi (2,764.25 km) |
| Ortahisar to Opmeer | 1,721.95 mi (2,771.21 km) |
| Ortahisar to Oss | 1,675.73 mi (2,696.83 km) |
| Ortahisar to Oud-Beijerland | 1,721.63 mi (2,770.69 km) |
| Ortahisar to Oudenbosch | 1,711.32 mi (2,754.10 km) |
