| Flensburg to Somma Lombardo | 629.49 mi (1,013.06 km) |
| Flensburg to Somma Vesuviana | 988.01 mi (1,590.04 km) |
| Flensburg to Sommacampagna | 651.21 mi (1,048.02 km) |
| Flensburg to Sona | 648.85 mi (1,044.22 km) |
| Flensburg to Sondrio | 595.35 mi (958.12 km) |
| Flensburg to Sora | 922.56 mi (1,484.71 km) |
| Flensburg to Sorbolo | 687.94 mi (1,107.14 km) |
| Flensburg to Soresina | 656.33 mi (1,056.26 km) |
| Flensburg to Sorisole | 624.98 mi (1,005.81 km) |
| Flensburg to Sorrento | 1,003.90 mi (1,615.63 km) |
| Flensburg to Sorso | 966.98 mi (1,556.20 km) |
| Flensburg to Sortino | 1,245.43 mi (2,004.33 km) |
| Flensburg to Soverato Marina | 1,160.75 mi (1,868.04 km) |
| Flensburg to Sovicille | 798.56 mi (1,285.16 km) |
| Flensburg to Spello | 827.74 mi (1,332.12 km) |
