| Ada to Arcos de Valdevez | 1,441.19 mi (2,319.37 km) |
| Ada to Arcozelo | 1,471.96 mi (2,368.89 km) |
| Ada to Arganil | 1,466.95 mi (2,360.82 km) |
| Ada to Arouca | 1,456.22 mi (2,343.56 km) |
| Ada to Arruda dos Vinhos | 1,552.69 mi (2,498.81 km) |
| Ada to Aveiro | 1,483.88 mi (2,388.07 km) |
| Ada to Aver-o-Mar | 1,469.13 mi (2,364.34 km) |
| Ada to Aves | 1,445.63 mi (2,326.51 km) |
| Ada to Azambuja | 1,540.51 mi (2,479.21 km) |
| Ada to Baiao | 1,439.86 mi (2,317.23 km) |
| Ada to Barcelos | 1,458.93 mi (2,347.92 km) |
| Ada to Barreiro | 1,562.79 mi (2,515.06 km) |
| Ada to Batalha | 1,519.41 mi (2,445.25 km) |
| Ada to Beja | 1,527.52 mi (2,458.31 km) |
| Ada to Belas | 1,569.08 mi (2,525.19 km) |
