| Southampton to Octeville | 88.76 mi (142.85 km) |
| Southampton to Oignies | 194.80 mi (313.50 km) |
| Southampton to Oissel | 154.41 mi (248.50 km) |
| Southampton to Olivet | 257.19 mi (413.90 km) |
| Southampton to Ollioules | 635.20 mi (1,022.25 km) |
| Southampton to Olonne-sur-Mer | 302.16 mi (486.27 km) |
| Southampton to Oloron-Sainte-Marie | 533.90 mi (859.24 km) |
| Southampton to Onet Village | 488.32 mi (785.88 km) |
| Southampton to Onnaing | 221.99 mi (357.26 km) |
| Southampton to Orange | 549.55 mi (884.41 km) |
| Southampton to Orchies | 205.57 mi (330.84 km) |
| Southampton to Orleans | 255.20 mi (410.70 km) |
| Southampton to Orly | 225.54 mi (362.97 km) |
| Southampton to Ormesson-sur-Marne | 228.52 mi (367.77 km) |
| Southampton to Orsay | 220.98 mi (355.64 km) |
