| Watford to Saint-Lo | 178.19 mi (286.78 km) |
| Watford to Saint-Loubes | 465.54 mi (749.21 km) |
| Watford to Saint-Louis | 453.45 mi (729.76 km) |
| Watford to Saint-Lys | 567.20 mi (912.81 km) |
| Watford to Saint-Malo | 219.57 mi (353.36 km) |
| Watford to Saint-Mande | 230.68 mi (371.24 km) |
| Watford to Saint-Martin-Boulogne | 108.77 mi (175.05 km) |
| Watford to Saint-Martin-d'Heres | 529.46 mi (852.08 km) |
| Watford to Saint-Martin-de-Crau | 604.16 mi (972.30 km) |
| Watford to Saint-Maur-des-Fosses | 235.13 mi (378.41 km) |
| Watford to Saint-Maurice | 232.47 mi (374.12 km) |
| Watford to Saint-Max | 356.15 mi (573.17 km) |
| Watford to Saint-Maximin-la-Sainte-Baume | 636.84 mi (1,024.89 km) |
| Watford to Saint-Medard-en-Jalles | 467.21 mi (751.89 km) |
| Watford to Saint-Michel-sur-Orge | 240.56 mi (387.15 km) |
