| Saint-Omer to Orthez | 521.37 mi (839.06 km) |
| Saint-Omer to Orvault | 297.69 mi (479.09 km) |
| Saint-Omer to Osny | 117.04 mi (188.36 km) |
| Saint-Omer to Ostwald | 287.20 mi (462.21 km) |
| Saint-Omer to Ouistreham | 151.02 mi (243.05 km) |
| Saint-Omer to Oullins | 366.94 mi (590.53 km) |
| Saint-Omer to Outreau | 29.33 mi (47.20 km) |
| Saint-Omer to Oyonnax | 347.03 mi (558.48 km) |
| Saint-Omer to Ozoir-la-Ferriere | 137.41 mi (221.15 km) |
| Saint-Omer to Pace | 255.14 mi (410.60 km) |
| Saint-Omer to Palaiseau | 140.52 mi (226.15 km) |
| Saint-Omer to Pamiers | 528.20 mi (850.05 km) |
| Saint-Omer to Panazol | 342.00 mi (550.40 km) |
| Saint-Omer to Pantin | 128.09 mi (206.15 km) |
| Saint-Omer to Paray-le-Monial | 308.79 mi (496.94 km) |
