| Ithaca to Octeville | 3,474.25 mi (5,591.26 km) |
| Ithaca to Oignies | 3,640.48 mi (5,858.78 km) |
| Ithaca to Oissel | 3,594.90 mi (5,785.43 km) |
| Ithaca to Olivet | 3,671.08 mi (5,908.04 km) |
| Ithaca to Ollioules | 3,992.35 mi (6,425.07 km) |
| Ithaca to Olonne-sur-Mer | 3,553.24 mi (5,718.39 km) |
| Ithaca to Oloron-Sainte-Marie | 3,705.34 mi (5,963.17 km) |
| Ithaca to Onet Village | 3,809.30 mi (6,130.47 km) |
| Ithaca to Onnaing | 3,667.03 mi (5,901.52 km) |
| Ithaca to Orange | 3,913.13 mi (6,297.58 km) |
| Ithaca to Orchies | 3,650.37 mi (5,874.70 km) |
| Ithaca to Orleans | 3,670.29 mi (5,906.76 km) |
| Ithaca to Orly | 3,665.66 mi (5,899.31 km) |
| Ithaca to Ormesson-sur-Marne | 3,670.44 mi (5,907.00 km) |
| Ithaca to Orsay | 3,658.52 mi (5,887.81 km) |
