| Alexandroupoli to Octeville | 1,458.58 mi (2,347.36 km) |
| Alexandroupoli to Oignies | 1,281.24 mi (2,061.95 km) |
| Alexandroupoli to Oissel | 1,335.01 mi (2,148.50 km) |
| Alexandroupoli to Olivet | 1,272.71 mi (2,048.23 km) |
| Alexandroupoli to Ollioules | 1,037.57 mi (1,669.80 km) |
| Alexandroupoli to Olonne-sur-Mer | 1,427.36 mi (2,297.11 km) |
| Alexandroupoli to Oloron-Sainte-Marie | 1,362.70 mi (2,193.05 km) |
| Alexandroupoli to Onet Village | 1,203.85 mi (1,937.41 km) |
| Alexandroupoli to Onnaing | 1,254.53 mi (2,018.96 km) |
| Alexandroupoli to Orange | 1,093.34 mi (1,759.56 km) |
| Alexandroupoli to Orchies | 1,271.21 mi (2,045.81 km) |
| Alexandroupoli to Orleans | 1,272.96 mi (2,048.63 km) |
| Alexandroupoli to Orly | 1,266.70 mi (2,038.55 km) |
| Alexandroupoli to Ormesson-sur-Marne | 1,261.19 mi (2,029.69 km) |
| Alexandroupoli to Orsay | 1,274.77 mi (2,051.55 km) |
