| Duluth to Bilecik | 5,455.86 mi (8,780.36 km) |
| Duluth to Bingol | 5,836.47 mi (9,392.88 km) |
| Duluth to Birecik | 5,875.63 mi (9,455.92 km) |
| Duluth to Bitlis | 5,908.84 mi (9,509.36 km) |
| Duluth to Bodrum | 5,545.39 mi (8,924.44 km) |
| Duluth to Bogazliyan | 5,669.50 mi (9,124.18 km) |
| Duluth to Bolu | 5,472.85 mi (8,807.70 km) |
| Duluth to Bolvadin | 5,569.21 mi (8,962.78 km) |
| Duluth to Bor | 5,724.78 mi (9,213.15 km) |
| Duluth to Borcka | 5,719.66 mi (9,204.91 km) |
| Duluth to Boyabat | 5,524.86 mi (8,891.40 km) |
| Duluth to Bozdogan | 5,539.64 mi (8,915.18 km) |
| Duluth to Bozkir | 5,693.04 mi (9,162.06 km) |
| Duluth to Bozkurt | 5,574.09 mi (8,970.63 km) |
| Duluth to Bozuyuk | 5,470.78 mi (8,804.37 km) |
