| Duluth to Arcos de Valdevez | 3,951.07 mi (6,358.64 km) |
| Duluth to Arcozelo | 3,974.03 mi (6,395.58 km) |
| Duluth to Arganil | 4,033.15 mi (6,490.73 km) |
| Duluth to Arouca | 3,995.59 mi (6,430.28 km) |
| Duluth to Arruda dos Vinhos | 4,041.42 mi (6,504.03 km) |
| Duluth to Aveiro | 3,990.87 mi (6,422.69 km) |
| Duluth to Aver-o-Mar | 3,954.41 mi (6,364.00 km) |
| Duluth to Aves | 3,972.58 mi (6,393.24 km) |
| Duluth to Azambuja | 4,046.50 mi (6,512.21 km) |
| Duluth to Baiao | 3,994.91 mi (6,429.18 km) |
| Duluth to Barcelos | 3,956.20 mi (6,366.90 km) |
| Duluth to Barreiro | 4,054.64 mi (6,525.31 km) |
| Duluth to Batalha | 4,025.08 mi (6,477.74 km) |
| Duluth to Beja | 4,132.14 mi (6,650.04 km) |
| Duluth to Belas | 4,041.30 mi (6,503.85 km) |
