| Key Largo to Arcos de Valdevez | 4,183.29 mi (6,732.35 km) |
| Key Largo to Arcozelo | 4,180.26 mi (6,727.49 km) |
| Key Largo to Arganil | 4,219.88 mi (6,791.24 km) |
| Key Largo to Arouca | 4,201.91 mi (6,762.31 km) |
| Key Largo to Arruda dos Vinhos | 4,181.15 mi (6,728.91 km) |
| Key Largo to Aveiro | 4,184.28 mi (6,733.94 km) |
| Key Largo to Aver-o-Mar | 4,169.96 mi (6,710.90 km) |
| Key Largo to Aves | 4,193.60 mi (6,748.95 km) |
| Key Largo to Azambuja | 4,190.74 mi (6,744.35 km) |
| Key Largo to Baiao | 4,210.23 mi (6,775.71 km) |
| Key Largo to Barcelos | 4,176.59 mi (6,721.57 km) |
| Key Largo to Barreiro | 4,184.90 mi (6,734.94 km) |
| Key Largo to Batalha | 4,187.47 mi (6,739.08 km) |
| Key Largo to Beja | 4,255.89 mi (6,849.20 km) |
| Key Largo to Belas | 4,172.73 mi (6,715.35 km) |
