| Kardzhali to Somma Lombardo | 876.44 mi (1,410.49 km) |
| Kardzhali to Somma Vesuviana | 569.82 mi (917.04 km) |
| Kardzhali to Sommacampagna | 770.71 mi (1,240.33 km) |
| Kardzhali to Sona | 772.07 mi (1,242.52 km) |
| Kardzhali to Sondrio | 830.44 mi (1,336.46 km) |
| Kardzhali to Sora | 605.86 mi (975.04 km) |
| Kardzhali to Sorbolo | 781.29 mi (1,257.37 km) |
| Kardzhali to Soresina | 815.78 mi (1,312.87 km) |
| Kardzhali to Sorisole | 832.42 mi (1,339.65 km) |
| Kardzhali to Sorrento | 575.97 mi (926.94 km) |
| Kardzhali to Sorso | 873.11 mi (1,405.13 km) |
| Kardzhali to Sortino | 632.03 mi (1,017.15 km) |
| Kardzhali to Soverato Marina | 508.32 mi (818.06 km) |
| Kardzhali to Sovicille | 728.23 mi (1,171.97 km) |
| Kardzhali to Spello | 654.45 mi (1,053.24 km) |
