| Boone to Arcos de Valdevez | 3,830.10 mi (6,163.95 km) |
| Boone to Arcozelo | 3,838.49 mi (6,177.45 km) |
| Boone to Arganil | 3,887.92 mi (6,257.00 km) |
| Boone to Arouca | 3,860.71 mi (6,213.21 km) |
| Boone to Arruda dos Vinhos | 3,869.21 mi (6,226.89 km) |
| Boone to Aveiro | 3,848.32 mi (6,193.28 km) |
| Boone to Aver-o-Mar | 3,823.75 mi (6,153.73 km) |
| Boone to Aves | 3,845.65 mi (6,188.97 km) |
| Boone to Azambuja | 3,877.04 mi (6,239.49 km) |
| Boone to Baiao | 3,865.27 mi (6,220.55 km) |
| Boone to Barcelos | 3,828.43 mi (6,161.27 km) |
| Boone to Barreiro | 3,877.35 mi (6,240.00 km) |
| Boone to Batalha | 3,865.49 mi (6,220.91 km) |
| Boone to Beja | 3,953.32 mi (6,362.25 km) |
| Boone to Belas | 3,864.31 mi (6,219.00 km) |
