| Southport to Octeville | 283.86 mi (456.82 km) |
| Southport to Oignies | 336.21 mi (541.08 km) |
| Southport to Oissel | 345.63 mi (556.24 km) |
| Southport to Olivet | 453.25 mi (729.44 km) |
| Southport to Ollioules | 830.46 mi (1,336.50 km) |
| Southport to Olonne-sur-Mer | 494.36 mi (795.59 km) |
| Southport to Oloron-Sainte-Marie | 730.47 mi (1,175.57 km) |
| Southport to Onet Village | 689.17 mi (1,109.11 km) |
| Southport to Onnaing | 359.70 mi (578.89 km) |
| Southport to Orange | 745.77 mi (1,200.19 km) |
| Southport to Orchies | 344.07 mi (553.73 km) |
| Southport to Orleans | 451.04 mi (725.88 km) |
| Southport to Orly | 411.35 mi (662.00 km) |
| Southport to Ormesson-sur-Marne | 412.52 mi (663.89 km) |
| Southport to Orsay | 409.08 mi (658.35 km) |
