| Boulder to Billingham | 4,514.99 mi (7,266.18 km) |
| Boulder to Bilston | 4,569.66 mi (7,354.16 km) |
| Boulder to Binfield | 4,659.78 mi (7,499.20 km) |
| Boulder to Bingham | 4,592.14 mi (7,390.34 km) |
| Boulder to Bingley | 4,526.65 mi (7,284.94 km) |
| Boulder to Birchington | 4,734.02 mi (7,618.67 km) |
| Boulder to Birkenhead | 4,504.84 mi (7,249.85 km) |
| Boulder to Birmingham | 4,578.94 mi (7,369.09 km) |
| Boulder to Birstall | 4,537.06 mi (7,301.69 km) |
| Boulder to Birstall | 4,597.79 mi (7,399.44 km) |
| Boulder to Bishop Auckland | 4,499.59 mi (7,241.40 km) |
| Boulder to Bishopbriggs | 4,368.54 mi (7,030.49 km) |
| Boulder to Bishops Cleeve | 4,594.90 mi (7,394.78 km) |
| Boulder to Bishops Stortford | 4,674.66 mi (7,523.15 km) |
| Boulder to Bishopstoke | 4,660.21 mi (7,499.88 km) |
