| Nea Smyrni to Oerlinghausen | 1,211.19 mi (1,949.22 km) |
| Nea Smyrni to Oestrich-Winkel | 1,137.31 mi (1,830.32 km) |
| Nea Smyrni to Offenburg | 1,073.05 mi (1,726.90 km) |
| Nea Smyrni to Oftersheim | 1,089.08 mi (1,752.70 km) |
| Nea Smyrni to Ohrdruf | 1,093.21 mi (1,759.36 km) |
| Nea Smyrni to Ohringen | 1,050.39 mi (1,690.44 km) |
| Nea Smyrni to Olbernhau | 1,015.40 mi (1,634.12 km) |
| Nea Smyrni to Olching | 942.71 mi (1,517.15 km) |
| Nea Smyrni to Oldenburg | 1,284.29 mi (2,066.87 km) |
| Nea Smyrni to Oldenburg in Holstein | 1,281.44 mi (2,062.28 km) |
| Nea Smyrni to Olfen | 1,237.27 mi (1,991.19 km) |
| Nea Smyrni to Olpe | 1,189.88 mi (1,914.93 km) |
| Nea Smyrni to Olsberg | 1,185.82 mi (1,908.39 km) |
| Nea Smyrni to Oranienburg | 1,139.72 mi (1,834.20 km) |
| Nea Smyrni to Ortenberg | 1,119.67 mi (1,801.93 km) |
