| Round Rock to Blumberg | 5,359.63 mi (8,625.50 km) |
| Round Rock to Bobenheim-Roxheim | 5,289.26 mi (8,512.25 km) |
| Round Rock to Bobingen | 5,432.20 mi (8,742.28 km) |
| Round Rock to Boblingen | 5,347.21 mi (8,605.50 km) |
| Round Rock to Bocholt | 5,144.12 mi (8,278.66 km) |
| Round Rock to Bochum | 5,178.53 mi (8,334.03 km) |
| Round Rock to Bockenem | 5,265.91 mi (8,474.66 km) |
| Round Rock to Bockhorn | 5,140.31 mi (8,272.53 km) |
| Round Rock to Bogen | 5,477.61 mi (8,815.36 km) |
| Round Rock to Bohl-Iggelheim | 5,294.96 mi (8,521.42 km) |
| Round Rock to Bohmte | 5,187.61 mi (8,348.64 km) |
| Round Rock to Boizenburg | 5,236.34 mi (8,427.08 km) |
| Round Rock to Bonen | 5,194.51 mi (8,359.76 km) |
| Round Rock to Bonn | 5,200.45 mi (8,369.31 km) |
| Round Rock to Bopfingen | 5,392.04 mi (8,677.65 km) |
