| Gretna to Sesimbra | 4,516.47 mi (7,268.55 km) |
| Gretna to Setubal | 4,525.13 mi (7,282.50 km) |
| Gretna to Sever do Vouga | 4,500.87 mi (7,243.45 km) |
| Gretna to Silves | 4,580.16 mi (7,371.06 km) |
| Gretna to Sines | 4,539.94 mi (7,306.32 km) |
| Gretna to Sintra | 4,493.58 mi (7,231.71 km) |
| Gretna to Sobrado de Paiva | 4,499.06 mi (7,240.54 km) |
| Gretna to Sobral de Monte Agraco | 4,500.55 mi (7,242.93 km) |
| Gretna to Soure | 4,503.08 mi (7,247.01 km) |
| Gretna to Tabua | 4,526.08 mi (7,284.03 km) |
| Gretna to Tavira | 4,622.51 mi (7,439.21 km) |
| Gretna to Tomar | 4,524.23 mi (7,281.04 km) |
| Gretna to Tondela | 4,519.82 mi (7,273.95 km) |
| Gretna to Torre de Moncorvo | 4,550.97 mi (7,324.07 km) |
| Gretna to Torres Novas | 4,521.45 mi (7,276.57 km) |
