| Gaziantep to Oerlinghausen | 1,731.09 mi (2,785.92 km) |
| Gaziantep to Oestrich-Winkel | 1,705.27 mi (2,744.36 km) |
| Gaziantep to Offenburg | 1,674.10 mi (2,694.20 km) |
| Gaziantep to Oftersheim | 1,665.79 mi (2,680.83 km) |
| Gaziantep to Ohrdruf | 1,616.88 mi (2,602.11 km) |
| Gaziantep to Ohringen | 1,623.01 mi (2,611.97 km) |
| Gaziantep to Olbernhau | 1,510.84 mi (2,431.46 km) |
| Gaziantep to Olching | 1,521.11 mi (2,447.99 km) |
| Gaziantep to Oldenburg | 1,783.79 mi (2,870.74 km) |
| Gaziantep to Oldenburg in Holstein | 1,728.56 mi (2,781.84 km) |
| Gaziantep to Olfen | 1,774.08 mi (2,855.11 km) |
| Gaziantep to Olpe | 1,737.58 mi (2,796.37 km) |
| Gaziantep to Olsberg | 1,720.63 mi (2,769.09 km) |
| Gaziantep to Oranienburg | 1,589.32 mi (2,557.76 km) |
| Gaziantep to Ortenberg | 1,670.76 mi (2,688.83 km) |
