| Senec to Sesimbra | 1,482.93 mi (2,386.54 km) |
| Senec to Setubal | 1,470.58 mi (2,366.68 km) |
| Senec to Sever do Vouga | 1,363.38 mi (2,194.15 km) |
| Senec to Silves | 1,506.58 mi (2,424.61 km) |
| Senec to Sines | 1,492.59 mi (2,402.10 km) |
| Senec to Sintra | 1,481.50 mi (2,384.24 km) |
| Senec to Sobrado de Paiva | 1,348.34 mi (2,169.94 km) |
| Senec to Sobral de Monte Agraco | 1,462.46 mi (2,353.59 km) |
| Senec to Soure | 1,400.11 mi (2,253.26 km) |
| Senec to Tabua | 1,361.71 mi (2,191.46 km) |
| Senec to Tavira | 1,475.82 mi (2,375.10 km) |
| Senec to Tomar | 1,407.38 mi (2,264.97 km) |
| Senec to Tondela | 1,358.44 mi (2,186.20 km) |
| Senec to Torre de Moncorvo | 1,291.58 mi (2,078.61 km) |
| Senec to Torres Novas | 1,417.66 mi (2,281.50 km) |
