| Mastic Beach to Sesimbra | 3,320.02 mi (5,343.05 km) |
| Mastic Beach to Setubal | 3,327.97 mi (5,355.86 km) |
| Mastic Beach to Sever do Vouga | 3,293.49 mi (5,300.35 km) |
| Mastic Beach to Silves | 3,389.02 mi (5,454.11 km) |
| Mastic Beach to Sines | 3,345.56 mi (5,384.15 km) |
| Mastic Beach to Sintra | 3,295.83 mi (5,304.13 km) |
| Mastic Beach to Sobrado de Paiva | 3,290.45 mi (5,295.47 km) |
| Mastic Beach to Sobral de Monte Agraco | 3,301.42 mi (5,313.12 km) |
| Mastic Beach to Soure | 3,298.71 mi (5,308.77 km) |
| Mastic Beach to Tabua | 3,319.76 mi (5,342.63 km) |
| Mastic Beach to Tavira | 3,430.35 mi (5,520.61 km) |
| Mastic Beach to Tomar | 3,321.49 mi (5,345.42 km) |
| Mastic Beach to Tondela | 3,312.95 mi (5,331.68 km) |
| Mastic Beach to Torre de Moncorvo | 3,340.64 mi (5,376.24 km) |
| Mastic Beach to Torres Novas | 3,319.44 mi (5,342.12 km) |
