| Biarritz to Somma Lombardo | 526.93 mi (848.01 km) |
| Biarritz to Somma Vesuviana | 837.27 mi (1,347.45 km) |
| Biarritz to Sommacampagna | 625.73 mi (1,007.01 km) |
| Biarritz to Sona | 625.24 mi (1,006.23 km) |
| Biarritz to Sondrio | 589.52 mi (948.75 km) |
| Biarritz to Sora | 780.32 mi (1,255.81 km) |
| Biarritz to Sorbolo | 602.07 mi (968.93 km) |
| Biarritz to Soresina | 576.88 mi (928.40 km) |
| Biarritz to Sorisole | 572.79 mi (921.82 km) |
| Biarritz to Sorrento | 839.42 mi (1,350.92 km) |
| Biarritz to Sorso | 550.99 mi (886.73 km) |
| Biarritz to Sortino | 974.48 mi (1,568.28 km) |
| Biarritz to Soverato Marina | 997.25 mi (1,604.92 km) |
| Biarritz to Sovicille | 641.95 mi (1,033.12 km) |
| Biarritz to Spello | 716.36 mi (1,152.86 km) |
