| Duncan to Ayr | 4,413.85 mi (7,103.41 km) |
| Duncan to Bacup | 4,553.12 mi (7,327.54 km) |
| Duncan to Baguley | 4,559.57 mi (7,337.93 km) |
| Duncan to Baildon | 4,564.60 mi (7,346.01 km) |
| Duncan to Bailleston | 4,421.36 mi (7,115.49 km) |
| Duncan to Balderton | 4,625.80 mi (7,444.50 km) |
| Duncan to Baldock | 4,681.73 mi (7,534.51 km) |
| Duncan to Balham | 4,701.01 mi (7,565.55 km) |
| Duncan to Bamber Bridge | 4,535.42 mi (7,299.06 km) |
| Duncan to Banbridge | 4,384.89 mi (7,056.79 km) |
| Duncan to Banbury | 4,636.32 mi (7,461.44 km) |
| Duncan to Bangor | 4,398.04 mi (7,077.96 km) |
| Duncan to Bangor | 4,495.73 mi (7,235.17 km) |
| Duncan to Banstead | 4,703.04 mi (7,568.82 km) |
| Duncan to Bargoed | 4,575.36 mi (7,363.34 km) |
