| Hemel Hempstead to Bicaz | 1,234.11 mi (1,986.12 km) |
| Hemel Hempstead to Bistrita | 1,159.81 mi (1,866.53 km) |
| Hemel Hempstead to Blaj | 1,164.73 mi (1,874.46 km) |
| Hemel Hempstead to Bocsa | 1,100.16 mi (1,770.53 km) |
| Hemel Hempstead to Boldesti-Scaeni | 1,292.67 mi (2,080.35 km) |
| Hemel Hempstead to Bolintin Vale | 1,302.18 mi (2,095.65 km) |
| Hemel Hempstead to Borsa | 1,151.86 mi (1,853.74 km) |
| Hemel Hempstead to Botosani | 1,234.98 mi (1,987.52 km) |
| Hemel Hempstead to Brad | 1,118.94 mi (1,800.76 km) |
| Hemel Hempstead to Bragadiru | 1,314.09 mi (2,114.82 km) |
| Hemel Hempstead to Braila | 1,365.79 mi (2,198.03 km) |
| Hemel Hempstead to Brasov | 1,253.39 mi (2,017.13 km) |
| Hemel Hempstead to Breaza | 1,271.70 mi (2,046.60 km) |
| Hemel Hempstead to Bucharest | 1,317.21 mi (2,119.84 km) |
| Hemel Hempstead to Buftea | 1,305.75 mi (2,101.40 km) |
