| Giannitsa to Octeville | 1,312.30 mi (2,111.94 km) |
| Giannitsa to Oignies | 1,146.38 mi (1,844.92 km) |
| Giannitsa to Oissel | 1,190.28 mi (1,915.58 km) |
| Giannitsa to Olivet | 1,120.56 mi (1,803.37 km) |
| Giannitsa to Ollioules | 864.39 mi (1,391.10 km) |
| Giannitsa to Olonne-sur-Mer | 1,266.10 mi (2,037.59 km) |
| Giannitsa to Oloron-Sainte-Marie | 1,189.36 mi (1,914.09 km) |
| Giannitsa to Onet Village | 1,034.90 mi (1,665.51 km) |
| Giannitsa to Onnaing | 1,120.34 mi (1,803.01 km) |
| Giannitsa to Orange | 924.11 mi (1,487.21 km) |
| Giannitsa to Orchies | 1,136.87 mi (1,829.62 km) |
| Giannitsa to Orleans | 1,121.03 mi (1,804.13 km) |
| Giannitsa to Orly | 1,120.21 mi (1,802.81 km) |
| Giannitsa to Ormesson-sur-Marne | 1,115.16 mi (1,794.68 km) |
| Giannitsa to Orsay | 1,127.74 mi (1,814.93 km) |
