| Sliven to Setubal | 1,856.36 mi (2,987.52 km) |
| Sliven to Sever do Vouga | 1,782.33 mi (2,868.39 km) |
| Sliven to Silves | 1,867.13 mi (3,004.85 km) |
| Sliven to Sines | 1,868.88 mi (3,007.67 km) |
| Sliven to Sintra | 1,874.99 mi (3,017.50 km) |
| Sliven to Sobrado de Paiva | 1,771.73 mi (2,851.32 km) |
| Sliven to Sobral de Monte Agraco | 1,857.95 mi (2,990.08 km) |
| Sliven to Soure | 1,809.28 mi (2,911.75 km) |
| Sliven to Tabua | 1,772.53 mi (2,852.62 km) |
| Sliven to Tavira | 1,828.93 mi (2,943.38 km) |
| Sliven to Tomar | 1,807.80 mi (2,909.37 km) |
| Sliven to Tondela | 1,772.21 mi (2,852.09 km) |
| Sliven to Torre de Moncorvo | 1,711.76 mi (2,754.81 km) |
| Sliven to Torres Novas | 1,816.59 mi (2,923.52 km) |
| Sliven to Torres Vedras | 1,862.27 mi (2,997.03 km) |
