| Arco to Alfena | 1,020.79 mi (1,642.81 km) |
| Arco to Alijo | 970.31 mi (1,561.57 km) |
| Arco to Aljustrel | 1,120.50 mi (1,803.26 km) |
| Arco to Almada | 1,135.47 mi (1,827.36 km) |
| Arco to Almargem | 1,134.45 mi (1,825.72 km) |
| Arco to Almeirim | 1,091.75 mi (1,757.00 km) |
| Arco to Amadora | 1,136.91 mi (1,829.69 km) |
| Arco to Amarante | 998.37 mi (1,606.73 km) |
| Arco to Amares | 1,000.94 mi (1,610.86 km) |
| Arco to Amora | 1,135.68 mi (1,827.71 km) |
| Arco to Anadia | 1,041.17 mi (1,675.60 km) |
| Arco to Angra do Heroismo | 1,990.48 mi (3,203.37 km) |
| Arco to Ansiao | 1,058.23 mi (1,703.06 km) |
| Arco to Anta | 1,032.31 mi (1,661.34 km) |
| Arco to Arcos de Valdevez | 998.68 mi (1,607.22 km) |
