| Douai to Setubal | 1,006.64 mi (1,620.02 km) |
| Douai to Sever do Vouga | 864.11 mi (1,390.65 km) |
| Douai to Silves | 1,074.26 mi (1,728.85 km) |
| Douai to Sines | 1,039.53 mi (1,672.96 km) |
| Douai to Sintra | 1,004.98 mi (1,617.36 km) |
| Douai to Sobrado de Paiva | 844.28 mi (1,358.73 km) |
| Douai to Sobral de Monte Agraco | 985.37 mi (1,585.80 km) |
| Douai to Soure | 910.78 mi (1,465.76 km) |
| Douai to Tabua | 875.09 mi (1,408.32 km) |
| Douai to Tavira | 1,058.47 mi (1,703.44 km) |
| Douai to Tomar | 930.20 mi (1,497.02 km) |
| Douai to Tondela | 867.77 mi (1,396.55 km) |
| Douai to Torre de Moncorvo | 800.76 mi (1,288.70 km) |
| Douai to Torres Novas | 941.31 mi (1,514.89 km) |
| Douai to Torres Vedras | 985.00 mi (1,585.20 km) |
