| Saint-Gilles to Octeville | 501.58 mi (807.21 km) |
| Saint-Gilles to Oignies | 474.07 mi (762.93 km) |
| Saint-Gilles to Oissel | 422.24 mi (679.52 km) |
| Saint-Gilles to Olivet | 313.85 mi (505.09 km) |
| Saint-Gilles to Ollioules | 80.21 mi (129.09 km) |
| Saint-Gilles to Olonne-sur-Mer | 361.12 mi (581.17 km) |
| Saint-Gilles to Oloron-Sainte-Marie | 254.91 mi (410.24 km) |
| Saint-Gilles to Onet Village | 102.92 mi (165.63 km) |
| Saint-Gilles to Onnaing | 465.26 mi (748.77 km) |
| Saint-Gilles to Orange | 36.98 mi (59.51 km) |
| Saint-Gilles to Orchies | 472.91 mi (761.08 km) |
| Saint-Gilles to Orleans | 316.13 mi (508.77 km) |
| Saint-Gilles to Orly | 363.31 mi (584.69 km) |
| Saint-Gilles to Ormesson-sur-Marne | 364.31 mi (586.29 km) |
| Saint-Gilles to Orsay | 363.05 mi (584.27 km) |
