| Southall to Octeville | 141.59 mi (227.87 km) |
| Southall to Oignies | 163.36 mi (262.90 km) |
| Southall to Oissel | 163.29 mi (262.79 km) |
| Southall to Olivet | 271.83 mi (437.47 km) |
| Southall to Ollioules | 647.24 mi (1,041.63 km) |
| Southall to Olonne-sur-Mer | 349.55 mi (562.55 km) |
| Southall to Oloron-Sainte-Marie | 574.81 mi (925.07 km) |
| Southall to Onet Village | 512.46 mi (824.72 km) |
| Southall to Onnaing | 189.67 mi (305.25 km) |
| Southall to Orange | 563.10 mi (906.23 km) |
| Southall to Orchies | 173.03 mi (278.47 km) |
| Southall to Orleans | 269.49 mi (433.70 km) |
| Southall to Orly | 227.21 mi (365.67 km) |
| Southall to Ormesson-sur-Marne | 228.33 mi (367.46 km) |
| Southall to Orsay | 225.19 mi (362.41 km) |
