| Syston to Sesimbra | 1,057.06 mi (1,701.17 km) |
| Syston to Setubal | 1,048.22 mi (1,686.95 km) |
| Syston to Sever do Vouga | 894.87 mi (1,440.15 km) |
| Syston to Silves | 1,129.21 mi (1,817.29 km) |
| Syston to Sines | 1,085.18 mi (1,746.42 km) |
| Syston to Sintra | 1,038.99 mi (1,672.09 km) |
| Syston to Sobrado de Paiva | 873.61 mi (1,405.94 km) |
| Syston to Sobral de Monte Agraco | 1,020.48 mi (1,642.31 km) |
| Syston to Soure | 944.04 mi (1,519.28 km) |
| Syston to Tabua | 913.30 mi (1,469.82 km) |
| Syston to Tavira | 1,122.52 mi (1,806.52 km) |
| Syston to Tomar | 969.64 mi (1,560.48 km) |
| Syston to Tondela | 904.00 mi (1,454.84 km) |
| Syston to Torre de Moncorvo | 843.57 mi (1,357.59 km) |
| Syston to Torres Novas | 980.35 mi (1,577.72 km) |
