| Opelousas to Octeville | 4,663.80 mi (7,505.66 km) |
| Opelousas to Oignies | 4,831.37 mi (7,775.34 km) |
| Opelousas to Oissel | 4,784.90 mi (7,700.55 km) |
| Opelousas to Olivet | 4,859.70 mi (7,820.94 km) |
| Opelousas to Ollioules | 5,174.70 mi (8,327.87 km) |
| Opelousas to Olonne-sur-Mer | 4,737.33 mi (7,624.00 km) |
| Opelousas to Oloron-Sainte-Marie | 4,880.80 mi (7,854.88 km) |
| Opelousas to Onet Village | 4,991.59 mi (8,033.19 km) |
| Opelousas to Onnaing | 4,857.94 mi (7,818.10 km) |
| Opelousas to Orange | 5,096.84 mi (8,202.58 km) |
| Opelousas to Orchies | 4,841.27 mi (7,791.28 km) |
| Opelousas to Orleans | 4,858.97 mi (7,819.75 km) |
| Opelousas to Orly | 4,855.46 mi (7,814.11 km) |
| Opelousas to Ormesson-sur-Marne | 4,860.32 mi (7,821.93 km) |
| Opelousas to Orsay | 4,848.21 mi (7,802.45 km) |
