| Smyrna to Oerlinghausen | 4,543.93 mi (7,312.74 km) |
| Smyrna to Oestrich-Winkel | 4,574.55 mi (7,362.03 km) |
| Smyrna to Offenburg | 4,617.01 mi (7,430.35 km) |
| Smyrna to Oftersheim | 4,616.75 mi (7,429.95 km) |
| Smyrna to Ohrdruf | 4,658.19 mi (7,496.62 km) |
| Smyrna to Ohringen | 4,659.01 mi (7,497.95 km) |
| Smyrna to Olbernhau | 4,764.32 mi (7,667.43 km) |
| Smyrna to Olching | 4,764.18 mi (7,667.21 km) |
| Smyrna to Oldenburg | 4,493.23 mi (7,231.15 km) |
| Smyrna to Oldenburg in Holstein | 4,559.44 mi (7,337.71 km) |
| Smyrna to Olfen | 4,501.05 mi (7,243.74 km) |
| Smyrna to Olpe | 4,538.55 mi (7,304.08 km) |
| Smyrna to Olsberg | 4,554.57 mi (7,329.86 km) |
| Smyrna to Oranienburg | 4,693.40 mi (7,553.29 km) |
| Smyrna to Ortenberg | 4,606.32 mi (7,413.15 km) |
