| Round Rock to Borgosatollo | 5,516.18 mi (8,877.44 km) |
| Round Rock to Borgosesia | 5,427.10 mi (8,734.08 km) |
| Round Rock to Boscoreale | 5,878.60 mi (9,460.69 km) |
| Round Rock to Boscotrecase | 5,877.21 mi (9,458.46 km) |
| Round Rock to Botticino Sera | 5,513.73 mi (8,873.48 km) |
| Round Rock to Bovalino Marina | 6,059.71 mi (9,752.16 km) |
| Round Rock to Boves | 5,448.43 mi (8,768.39 km) |
| Round Rock to Boville Ernica | 5,799.83 mi (9,333.93 km) |
| Round Rock to Bovisio Masciago | 5,466.75 mi (8,797.89 km) |
| Round Rock to Bovolone | 5,560.89 mi (8,949.38 km) |
| Round Rock to Bra | 5,447.45 mi (8,766.83 km) |
| Round Rock to Bracciano | 5,728.07 mi (9,218.43 km) |
| Round Rock to Brandizzo | 5,429.42 mi (8,737.81 km) |
| Round Rock to Breganze | 5,560.69 mi (8,949.06 km) |
| Round Rock to Brembate | 5,483.59 mi (8,824.99 km) |
