| Saint-Omer to Sin-le-Noble | 45.91 mi (73.89 km) |
| Saint-Omer to Six-Fours-les-Plages | 554.26 mi (892.00 km) |
| Saint-Omer to Soissons | 105.53 mi (169.84 km) |
| Saint-Omer to Soisy-sous-Montmorency | 121.65 mi (195.78 km) |
| Saint-Omer to Sollies-Pont | 551.62 mi (887.74 km) |
| Saint-Omer to Somain | 52.27 mi (84.12 km) |
| Saint-Omer to Sorgues | 481.37 mi (774.69 km) |
| Saint-Omer to Sotteville-les-Rouen | 106.09 mi (170.73 km) |
| Saint-Omer to Soyaux | 365.46 mi (588.14 km) |
| Saint-Omer to Stains | 124.37 mi (200.15 km) |
| Saint-Omer to Stiring-Wendel | 233.35 mi (375.53 km) |
| Saint-Omer to Strasbourg | 287.19 mi (462.19 km) |
| Saint-Omer to Sucy-en-Brie | 137.21 mi (220.81 km) |
| Saint-Omer to Suresnes | 129.79 mi (208.88 km) |
| Saint-Omer to Talant | 266.46 mi (428.83 km) |
