| Opwijk to Bistrita | 953.91 mi (1,535.16 km) |
| Opwijk to Blaj | 957.34 mi (1,540.69 km) |
| Opwijk to Bocsa | 892.35 mi (1,436.10 km) |
| Opwijk to Boldesti-Scaeni | 1,085.05 mi (1,746.22 km) |
| Opwijk to Bolintin Vale | 1,094.31 mi (1,761.12 km) |
| Opwijk to Borsa | 947.09 mi (1,524.19 km) |
| Opwijk to Botosani | 1,031.75 mi (1,660.44 km) |
| Opwijk to Brad | 911.23 mi (1,466.48 km) |
| Opwijk to Bragadiru | 1,106.22 mi (1,780.29 km) |
| Opwijk to Braila | 1,158.99 mi (1,865.22 km) |
| Opwijk to Brasov | 1,046.11 mi (1,683.54 km) |
| Opwijk to Breaza | 1,064.09 mi (1,712.49 km) |
| Opwijk to Bucharest | 1,109.37 mi (1,785.36 km) |
| Opwijk to Buftea | 1,097.93 mi (1,766.95 km) |
| Opwijk to Buhusi | 1,060.69 mi (1,707.01 km) |
