| Willoughby to Sesimbra | 3,715.18 mi (5,979.00 km) |
| Willoughby to Setubal | 3,722.44 mi (5,990.68 km) |
| Willoughby to Sever do Vouga | 3,676.93 mi (5,917.44 km) |
| Willoughby to Silves | 3,788.36 mi (6,096.78 km) |
| Willoughby to Sines | 3,742.42 mi (6,022.84 km) |
| Willoughby to Sintra | 3,689.91 mi (5,938.34 km) |
| Willoughby to Sobrado de Paiva | 3,672.27 mi (5,909.94 km) |
| Willoughby to Sobral de Monte Agraco | 3,694.14 mi (5,945.15 km) |
| Willoughby to Soure | 3,685.85 mi (5,931.81 km) |
| Willoughby to Tabua | 3,704.42 mi (5,961.68 km) |
| Willoughby to Tavira | 3,828.65 mi (6,161.61 km) |
| Willoughby to Tomar | 3,710.35 mi (5,971.23 km) |
| Willoughby to Tondela | 3,696.96 mi (5,949.68 km) |
| Willoughby to Torre de Moncorvo | 3,719.71 mi (5,986.30 km) |
| Willoughby to Torres Novas | 3,709.10 mi (5,969.23 km) |
