| Duncan to Barking | 4,706.64 mi (7,574.60 km) |
| Duncan to Barnet | 4,692.64 mi (7,552.08 km) |
| Duncan to Barnoldswick | 4,547.07 mi (7,317.80 km) |
| Duncan to Barnsley | 4,584.13 mi (7,377.44 km) |
| Duncan to Barnstaple | 4,562.12 mi (7,342.02 km) |
| Duncan to Barrhead | 4,412.91 mi (7,101.89 km) |
| Duncan to Barri | 4,582.92 mi (7,375.50 km) |
| Duncan to Barrow in Furness | 4,503.27 mi (7,247.31 km) |
| Duncan to Barton upon Humber | 4,617.67 mi (7,431.43 km) |
| Duncan to Barton upon Irwell | 4,554.13 mi (7,329.16 km) |
| Duncan to Barwell | 4,619.90 mi (7,435.01 km) |
| Duncan to Basford | 4,613.58 mi (7,424.84 km) |
| Duncan to Basildon | 4,720.77 mi (7,597.35 km) |
| Duncan to Basingstoke | 4,671.16 mi (7,517.51 km) |
| Duncan to Bath | 4,618.77 mi (7,433.19 km) |
