| San Marino to Bicaz | 6,412.61 mi (10,320.09 km) |
| San Marino to Bistrita | 6,362.22 mi (10,239.01 km) |
| San Marino to Blaj | 6,405.23 mi (10,308.22 km) |
| San Marino to Bocsa | 6,396.92 mi (10,294.85 km) |
| San Marino to Boldesti-Scaeni | 6,524.79 mi (10,500.63 km) |
| San Marino to Bolintin Vale | 6,553.39 mi (10,546.67 km) |
| San Marino to Borsa | 6,334.86 mi (10,194.97 km) |
| San Marino to Botosani | 6,374.90 mi (10,259.41 km) |
| San Marino to Brad | 6,380.17 mi (10,267.88 km) |
| San Marino to Bragadiru | 6,563.25 mi (10,562.54 km) |
| San Marino to Braila | 6,554.87 mi (10,549.04 km) |
| San Marino to Brasov | 6,476.60 mi (10,423.07 km) |
| San Marino to Breaza | 6,506.55 mi (10,471.28 km) |
| San Marino to Bucharest | 6,562.63 mi (10,561.53 km) |
| San Marino to Buftea | 6,550.63 mi (10,542.23 km) |
