| Lake Butler to Sesimbra | 4,126.56 mi (6,641.06 km) |
| Lake Butler to Setubal | 4,136.08 mi (6,656.37 km) |
| Lake Butler to Sever do Vouga | 4,127.49 mi (6,642.55 km) |
| Lake Butler to Silves | 4,183.22 mi (6,732.25 km) |
| Lake Butler to Sines | 4,147.22 mi (6,674.31 km) |
| Lake Butler to Sintra | 4,105.56 mi (6,607.27 km) |
| Lake Butler to Sobrado de Paiva | 4,127.91 mi (6,643.23 km) |
| Lake Butler to Sobral de Monte Agraco | 4,114.35 mi (6,621.40 km) |
| Lake Butler to Soure | 4,124.61 mi (6,637.92 km) |
| Lake Butler to Tabua | 4,150.65 mi (6,679.83 km) |
| Lake Butler to Tavira | 4,226.42 mi (6,801.76 km) |
| Lake Butler to Tomar | 4,143.05 mi (6,667.59 km) |
| Lake Butler to Tondela | 4,145.38 mi (6,671.34 km) |
| Lake Butler to Torre de Moncorvo | 4,182.70 mi (6,731.41 km) |
| Lake Butler to Torres Novas | 4,139.19 mi (6,661.38 km) |
