| Grande-Synthe to Bistrita | 1,035.45 mi (1,666.39 km) |
| Grande-Synthe to Blaj | 1,038.15 mi (1,670.74 km) |
| Grande-Synthe to Bocsa | 971.35 mi (1,563.24 km) |
| Grande-Synthe to Boldesti-Scaeni | 1,165.58 mi (1,875.82 km) |
| Grande-Synthe to Bolintin Vale | 1,174.24 mi (1,889.75 km) |
| Grande-Synthe to Borsa | 1,028.84 mi (1,655.75 km) |
| Grande-Synthe to Botosani | 1,113.59 mi (1,792.15 km) |
| Grande-Synthe to Brad | 991.63 mi (1,595.87 km) |
| Grande-Synthe to Bragadiru | 1,186.17 mi (1,908.95 km) |
| Grande-Synthe to Braila | 1,240.18 mi (1,995.87 km) |
| Grande-Synthe to Brasov | 1,126.99 mi (1,813.72 km) |
| Grande-Synthe to Breaza | 1,144.63 mi (1,842.10 km) |
| Grande-Synthe to Bucharest | 1,189.42 mi (1,914.19 km) |
| Grande-Synthe to Buftea | 1,178.05 mi (1,895.88 km) |
| Grande-Synthe to Buhusi | 1,142.33 mi (1,838.39 km) |
