| Castel Gandolfo to Bierun Stary | 653.73 mi (1,052.07 km) |
| Castel Gandolfo to Bilgoraj | 774.96 mi (1,247.18 km) |
| Castel Gandolfo to Biskupiec | 920.53 mi (1,481.46 km) |
| Castel Gandolfo to Blachownia | 692.78 mi (1,114.92 km) |
| Castel Gandolfo to Blonie | 812.88 mi (1,308.20 km) |
| Castel Gandolfo to Bochnia | 680.36 mi (1,094.94 km) |
| Castel Gandolfo to Bogatynia | 642.29 mi (1,033.67 km) |
| Castel Gandolfo to Boguszow-Gorce | 645.65 mi (1,039.07 km) |
| Castel Gandolfo to Boleslawiec | 672.06 mi (1,081.57 km) |
| Castel Gandolfo to Braniewo | 932.77 mi (1,501.14 km) |
| Castel Gandolfo to Brodnica | 854.54 mi (1,375.25 km) |
| Castel Gandolfo to Brwinow | 811.58 mi (1,306.11 km) |
| Castel Gandolfo to Brzeg | 670.62 mi (1,079.25 km) |
| Castel Gandolfo to Brzeg Dolny | 685.62 mi (1,103.39 km) |
| Castel Gandolfo to Brzesko | 684.30 mi (1,101.27 km) |
