| Seclin to Santiago do Cacem | 1,039.50 mi (1,672.91 km) |
| Seclin to Santo Andre | 1,038.86 mi (1,671.88 km) |
| Seclin to Santo Tirso | 840.94 mi (1,353.37 km) |
| Seclin to Sao Bras de Alportel | 1,071.04 mi (1,723.67 km) |
| Seclin to Sao Felix da Marinha | 862.38 mi (1,387.87 km) |
| Seclin to Sao Joao da Madeira | 865.90 mi (1,393.53 km) |
| Seclin to Sao Joao de Ver | 864.62 mi (1,391.47 km) |
| Seclin to Sao Mamede de Infesta | 852.46 mi (1,371.91 km) |
| Seclin to Sao Pedro do Sul | 861.51 mi (1,386.46 km) |
| Seclin to Satao | 852.67 mi (1,372.24 km) |
| Seclin to Seia | 869.76 mi (1,399.74 km) |
| Seclin to Senhora da Hora | 854.83 mi (1,375.71 km) |
| Seclin to Serpa | 1,015.07 mi (1,633.60 km) |
| Seclin to Serta | 917.29 mi (1,476.23 km) |
| Seclin to Sesimbra | 1,025.16 mi (1,649.84 km) |
