| Seclin to Alfena | 848.03 mi (1,364.77 km) |
| Seclin to Alijo | 814.07 mi (1,310.13 km) |
| Seclin to Aljustrel | 1,031.34 mi (1,659.78 km) |
| Seclin to Almada | 1,012.92 mi (1,630.14 km) |
| Seclin to Almargem | 1,006.41 mi (1,619.66 km) |
| Seclin to Almeirim | 967.04 mi (1,556.31 km) |
| Seclin to Amadora | 1,011.97 mi (1,628.61 km) |
| Seclin to Amarante | 832.33 mi (1,339.50 km) |
| Seclin to Amares | 821.17 mi (1,321.54 km) |
| Seclin to Amora | 1,014.95 mi (1,633.41 km) |
| Seclin to Anadia | 890.43 mi (1,433.01 km) |
| Seclin to Angra do Heroismo | 1,682.91 mi (2,708.39 km) |
| Seclin to Ansiao | 920.07 mi (1,480.72 km) |
| Seclin to Anta | 863.93 mi (1,390.36 km) |
| Seclin to Arcos de Valdevez | 811.29 mi (1,305.65 km) |
