| Southend to Octeville | 168.24 mi (270.75 km) |
| Southend to Oignies | 124.22 mi (199.91 km) |
| Southend to Oissel | 153.48 mi (247.01 km) |
| Southend to Olivet | 260.17 mi (418.71 km) |
| Southend to Ollioules | 628.52 mi (1,011.51 km) |
| Southend to Olonne-sur-Mer | 364.16 mi (586.06 km) |
| Southend to Oloron-Sainte-Marie | 580.58 mi (934.36 km) |
| Southend to Onet Village | 503.94 mi (811.01 km) |
| Southend to Onnaing | 149.11 mi (239.97 km) |
| Southend to Orange | 546.03 mi (878.74 km) |
| Southend to Orchies | 132.86 mi (213.82 km) |
| Southend to Orleans | 257.64 mi (414.62 km) |
| Southend to Orly | 207.69 mi (334.25 km) |
| Southend to Ormesson-sur-Marne | 207.40 mi (333.78 km) |
| Southend to Orsay | 207.62 mi (334.13 km) |
