| Castanet-Tolosan to Bistrita | 1,140.56 mi (1,835.55 km) |
| Castanet-Tolosan to Blaj | 1,109.55 mi (1,785.65 km) |
| Castanet-Tolosan to Bocsa | 1,002.57 mi (1,613.48 km) |
| Castanet-Tolosan to Boldesti-Scaeni | 1,213.48 mi (1,952.91 km) |
| Castanet-Tolosan to Bolintin Vale | 1,203.39 mi (1,936.66 km) |
| Castanet-Tolosan to Borsa | 1,151.30 mi (1,852.84 km) |
| Castanet-Tolosan to Botosani | 1,244.80 mi (2,003.31 km) |
| Castanet-Tolosan to Brad | 1,055.66 mi (1,698.93 km) |
| Castanet-Tolosan to Bragadiru | 1,214.60 mi (1,954.71 km) |
| Castanet-Tolosan to Braila | 1,306.04 mi (2,101.87 km) |
| Castanet-Tolosan to Brasov | 1,191.41 mi (1,917.38 km) |
| Castanet-Tolosan to Breaza | 1,194.93 mi (1,923.05 km) |
| Castanet-Tolosan to Bucharest | 1,220.51 mi (1,964.21 km) |
| Castanet-Tolosan to Buftea | 1,212.06 mi (1,950.61 km) |
| Castanet-Tolosan to Buhusi | 1,243.15 mi (2,000.65 km) |
