| Kardzhali to Sestao | 1,443.34 mi (2,322.83 km) |
| Kardzhali to Sevilla | 1,690.93 mi (2,721.29 km) |
| Kardzhali to Sevilla La Nueva | 1,528.07 mi (2,459.19 km) |
| Kardzhali to Silla | 1,358.25 mi (2,185.90 km) |
| Kardzhali to Silleda | 1,710.64 mi (2,753.00 km) |
| Kardzhali to Sitges | 1,216.93 mi (1,958.46 km) |
| Kardzhali to Socuellamos | 1,482.45 mi (2,385.77 km) |
| Kardzhali to Soller | 1,190.82 mi (1,916.43 km) |
| Kardzhali to Solsona | 1,224.22 mi (1,970.19 km) |
| Kardzhali to Son Servera | 1,159.16 mi (1,865.48 km) |
| Kardzhali to Sonseca | 1,534.71 mi (2,469.88 km) |
| Kardzhali to Sopelana | 1,441.58 mi (2,320.00 km) |
| Kardzhali to Soria | 1,429.37 mi (2,300.35 km) |
| Kardzhali to Suances | 1,494.77 mi (2,405.60 km) |
| Kardzhali to Sueca | 1,356.02 mi (2,182.31 km) |
