| Guyancourt to Bistrita | 1,040.11 mi (1,673.89 km) |
| Guyancourt to Blaj | 1,031.94 mi (1,660.75 km) |
| Guyancourt to Bocsa | 950.44 mi (1,529.58 km) |
| Guyancourt to Boldesti-Scaeni | 1,154.93 mi (1,858.68 km) |
| Guyancourt to Bolintin Vale | 1,157.92 mi (1,863.49 km) |
| Guyancourt to Borsa | 1,039.05 mi (1,672.19 km) |
| Guyancourt to Botosani | 1,128.64 mi (1,816.37 km) |
| Guyancourt to Brad | 981.77 mi (1,580.00 km) |
| Guyancourt to Bragadiru | 1,169.88 mi (1,882.74 km) |
| Guyancourt to Braila | 1,236.67 mi (1,990.23 km) |
| Guyancourt to Brasov | 1,120.71 mi (1,803.61 km) |
| Guyancourt to Breaza | 1,134.28 mi (1,825.44 km) |
| Guyancourt to Bucharest | 1,174.02 mi (1,889.41 km) |
| Guyancourt to Buftea | 1,163.32 mi (1,872.18 km) |
| Guyancourt to Buhusi | 1,148.06 mi (1,847.62 km) |
