| San Marino to Badger (Alaska) | 2,446.56 mi (3,937.36 km) |
| San Marino to Bailey's Crossroads (Virginia) | 2,280.73 mi (3,670.48 km) |
| San Marino to Bainbridge (Georgia) | 1,958.00 mi (3,151.10 km) |
| San Marino to Bainbridge Island (Washington) | 962.05 mi (1,548.28 km) |
| San Marino to Baker (Louisiana) | 1,587.48 mi (2,554.80 km) |
| San Marino to Bakersfield (California) | 99.86 mi (160.71 km) |
| San Marino to Balch Springs (Texas) | 1,241.26 mi (1,997.61 km) |
| San Marino to Baldwin (New York) | 2,457.88 mi (3,955.58 km) |
| San Marino to Baldwin (Pennsylvania) | 2,124.95 mi (3,419.78 km) |
| San Marino to Baldwin Park (California) | 8.52 mi (13.71 km) |
| San Marino to Ballenger Creek (Maryland) | 2,262.50 mi (3,641.14 km) |
| San Marino to Ballwin (Missouri) | 1,558.33 mi (2,507.89 km) |
| San Marino to Baltimore (Maryland) | 2,305.84 mi (3,710.89 km) |
| San Marino to Bangor (Maine) | 2,688.27 mi (4,326.35 km) |
| San Marino to Banning (California) | 70.57 mi (113.57 km) |
