| Boston to Saint-Lo | 270.69 mi (435.63 km) |
| Boston to Saint-Loubes | 556.97 mi (896.36 km) |
| Boston to Saint-Louis | 500.18 mi (804.97 km) |
| Boston to Saint-Lys | 655.91 mi (1,055.58 km) |
| Boston to Saint-Malo | 311.09 mi (500.64 km) |
| Boston to Saint-Mande | 304.58 mi (490.18 km) |
| Boston to Saint-Martin-Boulogne | 170.61 mi (274.56 km) |
| Boston to Saint-Martin-d'Heres | 599.16 mi (964.26 km) |
| Boston to Saint-Martin-de-Crau | 681.73 mi (1,097.14 km) |
| Boston to Saint-Maur-des-Fosses | 308.61 mi (496.66 km) |
| Boston to Saint-Maurice | 306.38 mi (493.08 km) |
| Boston to Saint-Max | 400.97 mi (645.30 km) |
| Boston to Saint-Maximin-la-Sainte-Baume | 710.81 mi (1,143.94 km) |
| Boston to Saint-Medard-en-Jalles | 558.99 mi (899.61 km) |
| Boston to Saint-Michel-sur-Orge | 316.63 mi (509.56 km) |
