| San Marino to Buena Park (California) | 19.35 mi (31.14 km) |
| San Marino to Buenaventura Lakes (Florida) | 2,196.25 mi (3,534.53 km) |
| San Marino to Buffalo (Minnesota) | 1,490.53 mi (2,398.77 km) |
| San Marino to Buffalo (New York) | 2,186.00 mi (3,518.03 km) |
| San Marino to Buffalo Grove (Illinois) | 1,719.53 mi (2,767.31 km) |
| San Marino to Buford (Georgia) | 1,942.52 mi (3,126.18 km) |
| San Marino to Bull Run (Virginia) | 2,260.19 mi (3,637.42 km) |
| San Marino to Bullhead City (Arizona) | 214.21 mi (344.73 km) |
| San Marino to Burbank (California) | 12.85 mi (20.68 km) |
| San Marino to Burbank (Illinois) | 1,725.11 mi (2,776.29 km) |
| San Marino to Burien (Washington) | 948.38 mi (1,526.28 km) |
| San Marino to Burkburnett (Texas) | 1,116.60 mi (1,797.00 km) |
| San Marino to Burke (Virginia) | 2,274.01 mi (3,659.66 km) |
| San Marino to Burke Centre (Virginia) | 2,271.97 mi (3,656.38 km) |
| San Marino to Burleson (Texas) | 1,202.71 mi (1,935.58 km) |
