| Castanet-Tolosan to Bierun Stary | 944.75 mi (1,520.42 km) |
| Castanet-Tolosan to Bilgoraj | 1,106.58 mi (1,780.87 km) |
| Castanet-Tolosan to Biskupiec | 1,133.67 mi (1,824.46 km) |
| Castanet-Tolosan to Blachownia | 958.68 mi (1,542.85 km) |
| Castanet-Tolosan to Blonie | 1,065.17 mi (1,714.23 km) |
| Castanet-Tolosan to Bochnia | 997.82 mi (1,605.84 km) |
| Castanet-Tolosan to Bogatynia | 810.15 mi (1,303.82 km) |
| Castanet-Tolosan to Boguszow-Gorce | 850.96 mi (1,369.49 km) |
| Castanet-Tolosan to Boleslawiec | 845.98 mi (1,361.47 km) |
| Castanet-Tolosan to Braniewo | 1,114.60 mi (1,793.78 km) |
| Castanet-Tolosan to Brodnica | 1,056.77 mi (1,700.71 km) |
| Castanet-Tolosan to Brwinow | 1,067.17 mi (1,717.44 km) |
| Castanet-Tolosan to Brzeg | 903.24 mi (1,453.63 km) |
| Castanet-Tolosan to Brzeg Dolny | 888.23 mi (1,429.47 km) |
| Castanet-Tolosan to Brzesko | 1,005.14 mi (1,617.62 km) |
