| Isbergues to Setubal | 1,002.90 mi (1,614.01 km) |
| Isbergues to Sever do Vouga | 858.32 mi (1,381.33 km) |
| Isbergues to Silves | 1,072.62 mi (1,726.22 km) |
| Isbergues to Sines | 1,036.47 mi (1,668.03 km) |
| Isbergues to Sintra | 1,000.18 mi (1,609.64 km) |
| Isbergues to Sobrado de Paiva | 838.20 mi (1,348.96 km) |
| Isbergues to Sobral de Monte Agraco | 980.66 mi (1,578.22 km) |
| Isbergues to Soure | 905.53 mi (1,457.32 km) |
| Isbergues to Tabua | 870.39 mi (1,400.75 km) |
| Isbergues to Tavira | 1,058.09 mi (1,702.84 km) |
| Isbergues to Tomar | 925.89 mi (1,490.08 km) |
| Isbergues to Tondela | 862.76 mi (1,388.48 km) |
| Isbergues to Torre de Moncorvo | 796.36 mi (1,281.61 km) |
| Isbergues to Torres Novas | 936.99 mi (1,507.94 km) |
| Isbergues to Torres Vedras | 980.04 mi (1,577.22 km) |
