| Istanbul to Nuth | 1,294.02 mi (2,082.52 km) |
| Istanbul to Oegstgeest | 1,384.78 mi (2,228.58 km) |
| Istanbul to Oirschot | 1,333.14 mi (2,145.48 km) |
| Istanbul to Oisterwijk | 1,339.38 mi (2,155.53 km) |
| Istanbul to Oldebroek | 1,338.11 mi (2,153.48 km) |
| Istanbul to Oldenzaal | 1,295.23 mi (2,084.48 km) |
| Istanbul to Ommen | 1,320.95 mi (2,125.86 km) |
| Istanbul to Oosterend | 1,349.80 mi (2,172.29 km) |
| Istanbul to Oosterhout | 1,354.53 mi (2,179.91 km) |
| Istanbul to Oosterwolde | 1,341.16 mi (2,158.39 km) |
| Istanbul to Oostzaan | 1,376.03 mi (2,214.50 km) |
| Istanbul to Opmeer | 1,381.51 mi (2,223.33 km) |
| Istanbul to Oss | 1,332.19 mi (2,143.95 km) |
| Istanbul to Oud-Beijerland | 1,377.23 mi (2,216.43 km) |
| Istanbul to Oudenbosch | 1,366.22 mi (2,198.72 km) |
