| Boulder to Borgosatollo | 5,310.18 mi (8,545.90 km) |
| Boulder to Borgosesia | 5,230.17 mi (8,417.14 km) |
| Boulder to Boscoreale | 5,693.20 mi (9,162.32 km) |
| Boulder to Boscotrecase | 5,691.77 mi (9,160.01 km) |
| Boulder to Botticino Sera | 5,307.16 mi (8,541.05 km) |
| Boulder to Bovalino Marina | 5,888.06 mi (9,475.92 km) |
| Boulder to Boves | 5,270.54 mi (8,482.12 km) |
| Boulder to Boville Ernica | 5,612.50 mi (9,032.45 km) |
| Boulder to Bovisio Masciago | 5,265.72 mi (8,474.35 km) |
| Boulder to Bovolone | 5,351.86 mi (8,612.99 km) |
| Boulder to Bra | 5,263.85 mi (8,471.34 km) |
| Boulder to Bracciano | 5,544.64 mi (8,923.24 km) |
| Boulder to Brandizzo | 5,240.77 mi (8,434.21 km) |
| Boulder to Breganze | 5,344.44 mi (8,601.04 km) |
| Boulder to Brembate | 5,280.38 mi (8,497.95 km) |
