| Duncan to Brownhills | 4,595.48 mi (7,395.71 km) |
| Duncan to Broxbourne | 4,695.92 mi (7,557.35 km) |
| Duncan to Broxburn | 4,441.69 mi (7,148.21 km) |
| Duncan to Bryn | 4,542.46 mi (7,310.38 km) |
| Duncan to Buckhurst Hill | 4,701.95 mi (7,567.05 km) |
| Duncan to Buckie | 4,410.05 mi (7,097.29 km) |
| Duncan to Buckingham | 4,651.63 mi (7,486.07 km) |
| Duncan to Buckley | 4,536.36 mi (7,300.56 km) |
| Duncan to Bucksburn | 4,451.01 mi (7,163.21 km) |
| Duncan to Bude | 4,550.93 mi (7,324.02 km) |
| Duncan to Bulwell | 4,611.82 mi (7,422.01 km) |
| Duncan to Burbage | 4,621.10 mi (7,436.94 km) |
| Duncan to Burgess Hill | 4,718.14 mi (7,593.12 km) |
| Duncan to Burnham | 4,678.62 mi (7,529.51 km) |
| Duncan to Burnham-on-Sea | 4,598.76 mi (7,400.99 km) |
