| Nea Smyrni to Octeville | 1,489.12 mi (2,396.51 km) |
| Nea Smyrni to Oignies | 1,334.10 mi (2,147.03 km) |
| Nea Smyrni to Oissel | 1,369.47 mi (2,203.94 km) |
| Nea Smyrni to Olivet | 1,292.43 mi (2,079.96 km) |
| Nea Smyrni to Ollioules | 1,001.94 mi (1,612.47 km) |
| Nea Smyrni to Olonne-sur-Mer | 1,424.06 mi (2,291.81 km) |
| Nea Smyrni to Oloron-Sainte-Marie | 1,321.66 mi (2,127.01 km) |
| Nea Smyrni to Onet Village | 1,180.60 mi (1,899.99 km) |
| Nea Smyrni to Onnaing | 1,308.70 mi (2,106.15 km) |
| Nea Smyrni to Orange | 1,070.81 mi (1,723.30 km) |
| Nea Smyrni to Orchies | 1,325.03 mi (2,132.43 km) |
| Nea Smyrni to Orleans | 1,293.16 mi (2,081.14 km) |
| Nea Smyrni to Orly | 1,298.23 mi (2,089.29 km) |
| Nea Smyrni to Ormesson-sur-Marne | 1,293.66 mi (2,081.95 km) |
| Nea Smyrni to Orsay | 1,305.14 mi (2,100.43 km) |
