| Bilbao to Bicaz | 1,429.31 mi (2,300.26 km) |
| Bilbao to Bistrita | 1,354.48 mi (2,179.82 km) |
| Bilbao to Blaj | 1,326.52 mi (2,134.82 km) |
| Bilbao to Bocsa | 1,221.73 mi (1,966.19 km) |
| Bilbao to Boldesti-Scaeni | 1,433.09 mi (2,306.33 km) |
| Bilbao to Bolintin Vale | 1,424.07 mi (2,291.81 km) |
| Bilbao to Borsa | 1,363.34 mi (2,194.08 km) |
| Bilbao to Botosani | 1,456.79 mi (2,344.48 km) |
| Bilbao to Brad | 1,272.74 mi (2,048.28 km) |
| Bilbao to Bragadiru | 1,435.38 mi (2,310.02 km) |
| Bilbao to Braila | 1,524.94 mi (2,454.15 km) |
| Bilbao to Brasov | 1,409.66 mi (2,268.62 km) |
| Bilbao to Breaza | 1,414.25 mi (2,276.02 km) |
| Bilbao to Bucharest | 1,441.17 mi (2,319.33 km) |
| Bilbao to Buftea | 1,432.51 mi (2,305.40 km) |
