| Leek to Sesimbra | 1,067.77 mi (1,718.41 km) |
| Leek to Setubal | 1,059.34 mi (1,704.85 km) |
| Leek to Sever do Vouga | 905.02 mi (1,456.48 km) |
| Leek to Silves | 1,142.47 mi (1,838.62 km) |
| Leek to Sines | 1,096.87 mi (1,765.24 km) |
| Leek to Sintra | 1,048.68 mi (1,687.70 km) |
| Leek to Sobrado de Paiva | 883.67 mi (1,422.13 km) |
| Leek to Sobral de Monte Agraco | 1,030.52 mi (1,658.46 km) |
| Leek to Soure | 954.27 mi (1,535.74 km) |
| Leek to Tabua | 924.75 mi (1,488.23 km) |
| Leek to Tavira | 1,137.56 mi (1,830.73 km) |
| Leek to Tomar | 980.88 mi (1,578.57 km) |
| Leek to Tondela | 915.13 mi (1,472.76 km) |
| Leek to Torre de Moncorvo | 856.52 mi (1,378.44 km) |
| Leek to Torres Novas | 991.44 mi (1,595.56 km) |
