| Cortland to Octeville | 3,454.52 mi (5,559.51 km) |
| Cortland to Oignies | 3,620.80 mi (5,827.11 km) |
| Cortland to Oissel | 3,575.18 mi (5,753.69 km) |
| Cortland to Olivet | 3,651.34 mi (5,876.26 km) |
| Cortland to Ollioules | 3,972.62 mi (6,393.31 km) |
| Cortland to Olonne-sur-Mer | 3,533.49 mi (5,686.61 km) |
| Cortland to Oloron-Sainte-Marie | 3,685.66 mi (5,931.49 km) |
| Cortland to Onet Village | 3,789.56 mi (6,098.71 km) |
| Cortland to Onnaing | 3,647.36 mi (5,869.86 km) |
| Cortland to Orange | 3,893.39 mi (6,265.80 km) |
| Cortland to Orchies | 3,630.69 mi (5,843.04 km) |
| Cortland to Orleans | 3,650.55 mi (5,874.99 km) |
| Cortland to Orly | 3,645.93 mi (5,867.56 km) |
| Cortland to Ormesson-sur-Marne | 3,650.71 mi (5,875.25 km) |
| Cortland to Orsay | 3,638.79 mi (5,856.06 km) |
