| Marlow to Sesimbra | 992.30 mi (1,596.96 km) |
| Marlow to Setubal | 983.08 mi (1,582.12 km) |
| Marlow to Sever do Vouga | 831.09 mi (1,337.51 km) |
| Marlow to Silves | 1,061.89 mi (1,708.95 km) |
| Marlow to Sines | 1,019.41 mi (1,640.58 km) |
| Marlow to Sintra | 975.30 mi (1,569.60 km) |
| Marlow to Sobrado de Paiva | 809.99 mi (1,303.55 km) |
| Marlow to Sobral de Monte Agraco | 956.49 mi (1,539.32 km) |
| Marlow to Soure | 880.04 mi (1,416.28 km) |
| Marlow to Tabua | 848.16 mi (1,364.98 km) |
| Marlow to Tavira | 1,053.59 mi (1,695.59 km) |
| Marlow to Tomar | 904.55 mi (1,455.74 km) |
| Marlow to Tondela | 839.19 mi (1,350.54 km) |
| Marlow to Torre de Moncorvo | 777.13 mi (1,250.67 km) |
| Marlow to Torres Novas | 915.40 mi (1,473.19 km) |
