| West Lafayette to Octeville | 3,984.76 mi (6,412.86 km) |
| West Lafayette to Oignies | 4,140.91 mi (6,664.16 km) |
| West Lafayette to Oissel | 4,103.04 mi (6,603.21 km) |
| West Lafayette to Olivet | 4,184.27 mi (6,733.93 km) |
| West Lafayette to Ollioules | 4,516.80 mi (7,269.09 km) |
| West Lafayette to Olonne-sur-Mer | 4,076.31 mi (6,560.18 km) |
| West Lafayette to Oloron-Sainte-Marie | 4,237.99 mi (6,820.39 km) |
| West Lafayette to Onet Village | 4,334.28 mi (6,975.35 km) |
| West Lafayette to Onnaing | 4,166.96 mi (6,706.08 km) |
| West Lafayette to Orange | 4,435.82 mi (7,138.77 km) |
| West Lafayette to Orchies | 4,150.42 mi (6,679.45 km) |
| West Lafayette to Orleans | 4,183.31 mi (6,732.39 km) |
| West Lafayette to Orly | 4,174.55 mi (6,718.28 km) |
| West Lafayette to Ormesson-sur-Marne | 4,178.94 mi (6,725.35 km) |
| West Lafayette to Orsay | 4,167.88 mi (6,707.56 km) |
