| Boucau to Sannois | 416.68 mi (670.59 km) |
| Boucau to Saran | 346.26 mi (557.26 km) |
| Boucau to Sarcelles | 420.67 mi (677.00 km) |
| Boucau to Sarlat-la-Caneda | 163.82 mi (263.64 km) |
| Boucau to Sarrebourg | 544.27 mi (875.92 km) |
| Boucau to Sarreguemines | 561.24 mi (903.23 km) |
| Boucau to Sartrouville | 412.63 mi (664.06 km) |
| Boucau to Sarzeau | 283.50 mi (456.24 km) |
| Boucau to Sassenage | 371.72 mi (598.23 km) |
| Boucau to Saumur | 267.06 mi (429.79 km) |
| Boucau to Savenay | 266.06 mi (428.18 km) |
| Boucau to Saverne | 555.67 mi (894.26 km) |
| Boucau to Savigny-le-Temple | 400.28 mi (644.19 km) |
| Boucau to Savigny-sur-Orge | 400.65 mi (644.79 km) |
| Boucau to Sceaux | 405.48 mi (652.56 km) |
