| Longford to Octeville | 386.81 mi (622.51 km) |
| Longford to Oignies | 509.73 mi (820.33 km) |
| Longford to Oissel | 487.07 mi (783.86 km) |
| Longford to Olivet | 585.20 mi (941.80 km) |
| Longford to Ollioules | 959.23 mi (1,543.72 km) |
| Longford to Olonne-sur-Mer | 563.54 mi (906.93 km) |
| Longford to Oloron-Sainte-Marie | 797.92 mi (1,284.13 km) |
| Longford to Onet Village | 798.19 mi (1,284.56 km) |
| Longford to Onnaing | 535.56 mi (861.90 km) |
| Longford to Orange | 872.91 mi (1,404.81 km) |
| Longford to Orchies | 519.07 mi (835.36 km) |
| Longford to Orleans | 583.51 mi (939.07 km) |
| Longford to Orly | 558.54 mi (898.88 km) |
| Longford to Ormesson-sur-Marne | 561.57 mi (903.76 km) |
| Longford to Orsay | 553.74 mi (891.16 km) |
