| Oak Park to Sesimbra | 4,009.52 mi (6,452.71 km) |
| Oak Park to Setubal | 4,016.32 mi (6,463.64 km) |
| Oak Park to Sever do Vouga | 3,963.82 mi (6,379.16 km) |
| Oak Park to Silves | 4,085.23 mi (6,574.55 km) |
| Oak Park to Sines | 4,037.79 mi (6,498.20 km) |
| Oak Park to Sintra | 3,983.64 mi (6,411.04 km) |
| Oak Park to Sobrado de Paiva | 3,958.13 mi (6,369.99 km) |
| Oak Park to Sobral de Monte Agraco | 3,986.97 mi (6,416.41 km) |
| Oak Park to Soure | 3,975.11 mi (6,397.32 km) |
| Oak Park to Tabua | 3,992.02 mi (6,424.53 km) |
| Oak Park to Tavira | 4,124.75 mi (6,638.15 km) |
| Oak Park to Tomar | 4,000.65 mi (6,438.42 km) |
| Oak Park to Tondela | 3,984.16 mi (6,411.88 km) |
| Oak Park to Torre de Moncorvo | 4,003.65 mi (6,443.25 km) |
| Oak Park to Torres Novas | 3,999.92 mi (6,437.26 km) |
