| Round Rock to Bierun | 5,657.46 mi (9,104.81 km) |
| Round Rock to Bierun Stary | 5,659.11 mi (9,107.46 km) |
| Round Rock to Bilgoraj | 5,761.03 mi (9,271.48 km) |
| Round Rock to Biskupiec | 5,554.75 mi (8,939.51 km) |
| Round Rock to Blachownia | 5,624.68 mi (9,052.04 km) |
| Round Rock to Blonie | 5,617.47 mi (9,040.45 km) |
| Round Rock to Bochnia | 5,709.69 mi (9,188.86 km) |
| Round Rock to Bogatynia | 5,480.57 mi (8,820.12 km) |
| Round Rock to Boguszow-Gorce | 5,529.96 mi (8,899.61 km) |
| Round Rock to Boleslawiec | 5,487.26 mi (8,830.89 km) |
| Round Rock to Braniewo | 5,496.64 mi (8,845.98 km) |
| Round Rock to Brodnica | 5,531.54 mi (8,902.15 km) |
| Round Rock to Brwinow | 5,623.31 mi (9,049.84 km) |
| Round Rock to Brzeg | 5,570.31 mi (8,964.55 km) |
| Round Rock to Brzeg Dolny | 5,527.05 mi (8,894.93 km) |
