| Sliven to Skarzysko-Kamienna | 635.90 mi (1,023.38 km) |
| Sliven to Skawina | 591.56 mi (952.02 km) |
| Sliven to Skierniewice | 703.14 mi (1,131.60 km) |
| Sliven to Skoczow | 609.10 mi (980.26 km) |
| Sliven to Skwierzyna | 848.80 mi (1,366.01 km) |
| Sliven to Slawno | 917.90 mi (1,477.21 km) |
| Sliven to Slubice | 862.40 mi (1,387.89 km) |
| Sliven to Slupca | 771.95 mi (1,242.33 km) |
| Sliven to Slupsk | 916.70 mi (1,475.28 km) |
| Sliven to Sochaczew | 718.12 mi (1,155.70 km) |
| Sliven to Sokolka | 751.77 mi (1,209.86 km) |
| Sliven to Sokolow Podlaski | 697.56 mi (1,122.61 km) |
| Sliven to Solec Kujawski | 809.49 mi (1,302.75 km) |
| Sliven to Sopot | 885.89 mi (1,425.71 km) |
| Sliven to Sosnowiec | 626.30 mi (1,007.93 km) |
