| Louth to Santarem | 1,058.92 mi (1,704.16 km) |
| Louth to Santiago do Cacem | 1,138.58 mi (1,832.36 km) |
| Louth to Santo Andre | 1,137.27 mi (1,830.25 km) |
| Louth to Santo Tirso | 919.44 mi (1,479.70 km) |
| Louth to Sao Bras de Alportel | 1,182.43 mi (1,902.94 km) |
| Louth to Sao Felix da Marinha | 941.66 mi (1,515.46 km) |
| Louth to Sao Joao da Madeira | 947.80 mi (1,525.33 km) |
| Louth to Sao Joao de Ver | 945.36 mi (1,521.42 km) |
| Louth to Sao Mamede de Infesta | 930.60 mi (1,497.66 km) |
| Louth to Sao Pedro do Sul | 949.29 mi (1,527.74 km) |
| Louth to Satao | 944.34 mi (1,519.77 km) |
| Louth to Seia | 964.06 mi (1,551.50 km) |
| Louth to Senhora da Hora | 932.51 mi (1,500.73 km) |
| Louth to Serpa | 1,125.35 mi (1,811.08 km) |
| Louth to Serta | 1,011.57 mi (1,627.96 km) |
