| Drogheda to Setubal | 1,056.43 mi (1,700.15 km) |
| Drogheda to Sever do Vouga | 901.82 mi (1,451.34 km) |
| Drogheda to Silves | 1,146.32 mi (1,844.83 km) |
| Drogheda to Sines | 1,095.45 mi (1,762.95 km) |
| Drogheda to Sintra | 1,040.49 mi (1,674.51 km) |
| Drogheda to Sobrado de Paiva | 880.70 mi (1,417.35 km) |
| Drogheda to Sobral de Monte Agraco | 1,023.99 mi (1,647.96 km) |
| Drogheda to Soure | 950.16 mi (1,529.13 km) |
| Drogheda to Tabua | 926.02 mi (1,490.29 km) |
| Drogheda to Tavira | 1,148.51 mi (1,848.34 km) |
| Drogheda to Tomar | 980.04 mi (1,577.23 km) |
| Drogheda to Tondela | 915.47 mi (1,473.30 km) |
| Drogheda to Torre de Moncorvo | 865.46 mi (1,392.82 km) |
| Drogheda to Torres Novas | 989.77 mi (1,592.88 km) |
| Drogheda to Torres Vedras | 1,020.22 mi (1,641.89 km) |
