| Upminster to Bicaz | 1,202.12 mi (1,934.63 km) |
| Upminster to Bistrita | 1,127.65 mi (1,814.78 km) |
| Upminster to Blaj | 1,132.00 mi (1,821.77 km) |
| Upminster to Bocsa | 1,066.81 mi (1,716.87 km) |
| Upminster to Boldesti-Scaeni | 1,259.80 mi (2,027.45 km) |
| Upminster to Bolintin Vale | 1,269.08 mi (2,042.38 km) |
| Upminster to Borsa | 1,120.05 mi (1,802.55 km) |
| Upminster to Botosani | 1,203.61 mi (1,937.02 km) |
| Upminster to Brad | 1,086.00 mi (1,747.76 km) |
| Upminster to Bragadiru | 1,280.99 mi (2,061.56 km) |
| Upminster to Braila | 1,333.33 mi (2,145.78 km) |
| Upminster to Brasov | 1,220.71 mi (1,964.54 km) |
| Upminster to Breaza | 1,238.84 mi (1,993.72 km) |
| Upminster to Bucharest | 1,284.15 mi (2,066.64 km) |
| Upminster to Buftea | 1,272.72 mi (2,048.24 km) |
