| Alpena to Arcos de Valdevez | 3,629.62 mi (5,841.31 km) |
| Alpena to Arcozelo | 3,647.95 mi (5,870.80 km) |
| Alpena to Arganil | 3,704.38 mi (5,961.63 km) |
| Alpena to Arouca | 3,669.90 mi (5,906.13 km) |
| Alpena to Arruda dos Vinhos | 3,704.10 mi (5,961.17 km) |
| Alpena to Aveiro | 3,662.64 mi (5,894.45 km) |
| Alpena to Aver-o-Mar | 3,629.77 mi (5,841.55 km) |
| Alpena to Aves | 3,649.32 mi (5,873.02 km) |
| Alpena to Azambuja | 3,710.08 mi (5,970.80 km) |
| Alpena to Baiao | 3,670.94 mi (5,907.81 km) |
| Alpena to Barcelos | 3,632.54 mi (5,846.00 km) |
| Alpena to Barreiro | 3,715.83 mi (5,980.06 km) |
| Alpena to Batalha | 3,691.63 mi (5,941.10 km) |
| Alpena to Beja | 3,793.44 mi (6,104.96 km) |
| Alpena to Belas | 3,702.48 mi (5,958.57 km) |
