| Boulder to Belper | 4,571.42 mi (7,356.99 km) |
| Boulder to Bentley | 4,561.53 mi (7,341.08 km) |
| Boulder to Berkhampstead | 4,654.26 mi (7,490.31 km) |
| Boulder to Berwick-Upon-Tweed | 4,445.66 mi (7,154.59 km) |
| Boulder to Beverley | 4,573.43 mi (7,360.23 km) |
| Boulder to Bewdley | 4,568.95 mi (7,353.01 km) |
| Boulder to Bexleyheath | 4,690.70 mi (7,548.95 km) |
| Boulder to Bicester | 4,628.25 mi (7,448.45 km) |
| Boulder to Bickenhill | 4,586.67 mi (7,381.52 km) |
| Boulder to Bickley | 4,690.01 mi (7,547.84 km) |
| Boulder to Biddulph | 4,544.26 mi (7,313.27 km) |
| Boulder to Bideford | 4,556.28 mi (7,332.63 km) |
| Boulder to Bidston | 4,502.32 mi (7,245.78 km) |
| Boulder to Biggleswade | 4,651.23 mi (7,485.44 km) |
| Boulder to Billericay | 4,693.23 mi (7,553.03 km) |
