| Duluth to Ayamonte | 4,188.55 mi (6,740.82 km) |
| Duluth to Azcoitia | 4,145.08 mi (6,670.86 km) |
| Duluth to Azpeitia | 4,146.77 mi (6,673.58 km) |
| Duluth to Azuqueca de Henares | 4,217.85 mi (6,787.97 km) |
| Duluth to Badajoz | 4,134.93 mi (6,654.52 km) |
| Duluth to Badalona | 4,401.32 mi (7,083.24 km) |
| Duluth to Baena | 4,302.12 mi (6,923.59 km) |
| Duluth to Baeza | 4,321.87 mi (6,955.38 km) |
| Duluth to Bailen | 4,304.87 mi (6,928.02 km) |
| Duluth to Balaguer | 4,328.97 mi (6,966.81 km) |
| Duluth to Banolas | 4,391.55 mi (7,067.51 km) |
| Duluth to Baranain | 4,186.85 mi (6,738.09 km) |
| Duluth to Barbadanes | 3,954.01 mi (6,363.36 km) |
| Duluth to Barbastro | 4,291.22 mi (6,906.05 km) |
| Duluth to Barcelona | 4,401.37 mi (7,083.32 km) |
