| Saint Helens to Octeville | 268.39 mi (431.93 km) |
| Saint Helens to Oignies | 319.54 mi (514.25 km) |
| Saint Helens to Oissel | 328.51 mi (528.68 km) |
| Saint Helens to Olivet | 436.20 mi (702.00 km) |
| Saint Helens to Ollioules | 813.32 mi (1,308.91 km) |
| Saint Helens to Olonne-sur-Mer | 479.66 mi (771.94 km) |
| Saint Helens to Oloron-Sainte-Marie | 715.33 mi (1,151.21 km) |
| Saint Helens to Onet Village | 672.48 mi (1,082.25 km) |
| Saint Helens to Onnaing | 343.22 mi (552.36 km) |
| Saint Helens to Orange | 728.66 mi (1,172.67 km) |
| Saint Helens to Orchies | 327.51 mi (527.08 km) |
| Saint Helens to Orleans | 433.98 mi (698.42 km) |
| Saint Helens to Orly | 394.14 mi (634.31 km) |
| Saint Helens to Ormesson-sur-Marne | 395.32 mi (636.20 km) |
| Saint Helens to Orsay | 391.89 mi (630.69 km) |
