| Mount Vernon to Sesimbra | 3,365.58 mi (5,416.38 km) |
| Mount Vernon to Setubal | 3,373.45 mi (5,429.04 km) |
| Mount Vernon to Sever do Vouga | 3,337.52 mi (5,371.23 km) |
| Mount Vernon to Silves | 3,435.15 mi (5,528.34 km) |
| Mount Vernon to Sines | 3,391.35 mi (5,457.84 km) |
| Mount Vernon to Sintra | 3,341.25 mi (5,377.22 km) |
| Mount Vernon to Sobrado de Paiva | 3,334.28 mi (5,366.01 km) |
| Mount Vernon to Sobral de Monte Agraco | 3,346.66 mi (5,385.93 km) |
| Mount Vernon to Soure | 3,343.23 mi (5,380.41 km) |
| Mount Vernon to Tabua | 3,363.96 mi (5,413.77 km) |
| Mount Vernon to Tavira | 3,476.35 mi (5,594.64 km) |
| Mount Vernon to Tomar | 3,366.24 mi (5,417.43 km) |
| Mount Vernon to Tondela | 3,357.07 mi (5,402.68 km) |
| Mount Vernon to Torre de Moncorvo | 3,384.13 mi (5,446.23 km) |
| Mount Vernon to Torres Novas | 3,364.29 mi (5,414.30 km) |
