| Isabela to Arcos de Valdevez | 3,770.45 mi (6,067.95 km) |
| Isabela to Arcozelo | 3,753.01 mi (6,039.89 km) |
| Isabela to Arganil | 3,777.85 mi (6,079.86 km) |
| Isabela to Arouca | 3,772.60 mi (6,071.41 km) |
| Isabela to Arruda dos Vinhos | 3,716.61 mi (5,981.31 km) |
| Isabela to Aveiro | 3,749.40 mi (6,034.08 km) |
| Isabela to Aver-o-Mar | 3,748.98 mi (6,033.40 km) |
| Isabela to Aves | 3,773.41 mi (6,072.71 km) |
| Isabela to Azambuja | 3,727.80 mi (5,999.32 km) |
| Isabela to Baiao | 3,785.20 mi (6,091.69 km) |
| Isabela to Barcelos | 3,757.70 mi (6,047.43 km) |
| Isabela to Barreiro | 3,714.76 mi (5,978.33 km) |
| Isabela to Batalha | 3,734.92 mi (6,010.78 km) |
| Isabela to Beja | 3,775.57 mi (6,076.20 km) |
| Isabela to Belas | 3,704.39 mi (5,961.64 km) |
