| Reston to Sesimbra | 3,588.15 mi (5,774.57 km) |
| Reston to Setubal | 3,596.21 mi (5,787.53 km) |
| Reston to Sever do Vouga | 3,562.95 mi (5,734.01 km) |
| Reston to Silves | 3,656.42 mi (5,884.44 km) |
| Reston to Sines | 3,613.41 mi (5,815.21 km) |
| Reston to Sintra | 3,564.13 mi (5,735.92 km) |
| Reston to Sobrado de Paiva | 3,560.03 mi (5,729.32 km) |
| Reston to Sobral de Monte Agraco | 3,569.91 mi (5,745.21 km) |
| Reston to Soure | 3,567.85 mi (5,741.90 km) |
| Reston to Tabua | 3,589.11 mi (5,776.12 km) |
| Reston to Tavira | 3,697.91 mi (5,951.21 km) |
| Reston to Tomar | 3,590.44 mi (5,778.25 km) |
| Reston to Tondela | 3,582.36 mi (5,765.26 km) |
| Reston to Torre de Moncorvo | 3,610.38 mi (5,810.34 km) |
| Reston to Torres Novas | 3,588.30 mi (5,774.81 km) |
