| Ptolemaida to Octeville | 1,292.97 mi (2,080.83 km) |
| Ptolemaida to Oignies | 1,131.42 mi (1,820.85 km) |
| Ptolemaida to Oissel | 1,171.74 mi (1,885.73 km) |
| Ptolemaida to Olivet | 1,099.33 mi (1,769.21 km) |
| Ptolemaida to Ollioules | 833.86 mi (1,341.97 km) |
| Ptolemaida to Olonne-sur-Mer | 1,240.91 mi (1,997.05 km) |
| Ptolemaida to Oloron-Sainte-Marie | 1,158.37 mi (1,864.22 km) |
| Ptolemaida to Onet Village | 1,006.43 mi (1,619.69 km) |
| Ptolemaida to Onnaing | 1,105.67 mi (1,779.40 km) |
| Ptolemaida to Orange | 895.67 mi (1,441.44 km) |
| Ptolemaida to Orchies | 1,122.12 mi (1,805.87 km) |
| Ptolemaida to Orleans | 1,099.89 mi (1,770.11 km) |
| Ptolemaida to Orly | 1,101.16 mi (1,772.14 km) |
| Ptolemaida to Ormesson-sur-Marne | 1,096.29 mi (1,764.30 km) |
| Ptolemaida to Orsay | 1,108.47 mi (1,783.90 km) |
