| Louth to Sesimbra | 1,117.83 mi (1,798.97 km) |
| Louth to Setubal | 1,108.82 mi (1,784.47 km) |
| Louth to Sever do Vouga | 955.99 mi (1,538.51 km) |
| Louth to Silves | 1,188.76 mi (1,913.13 km) |
| Louth to Sines | 1,145.50 mi (1,843.51 km) |
| Louth to Sintra | 1,100.19 mi (1,770.58 km) |
| Louth to Sobrado de Paiva | 934.78 mi (1,504.38 km) |
| Louth to Sobral de Monte Agraco | 1,081.56 mi (1,740.60 km) |
| Louth to Soure | 1,005.08 mi (1,617.53 km) |
| Louth to Tabua | 973.86 mi (1,567.28 km) |
| Louth to Tavira | 1,181.12 mi (1,900.83 km) |
| Louth to Tomar | 1,030.24 mi (1,658.01 km) |
| Louth to Tondela | 964.70 mi (1,552.53 km) |
| Louth to Torre de Moncorvo | 903.50 mi (1,454.04 km) |
| Louth to Torres Novas | 1,041.01 mi (1,675.35 km) |
