| San Marino to Bridgeport (Connecticut) | 2,476.89 mi (3,986.16 km) |
| San Marino to Bridgeton (Missouri) | 1,565.56 mi (2,519.53 km) |
| San Marino to Bridgetown (Ohio) | 1,877.32 mi (3,021.25 km) |
| San Marino to Bridgeview (Illinois) | 1,723.12 mi (2,773.10 km) |
| San Marino to Brigham City (Utah) | 607.72 mi (978.03 km) |
| San Marino to Brighton (Colorado) | 836.95 mi (1,346.94 km) |
| San Marino to Bristol (Connecticut) | 2,488.13 mi (4,004.26 km) |
| San Marino to Bristol (Tennessee) | 2,018.56 mi (3,248.55 km) |
| San Marino to Bristol (Virginia) | 2,021.15 mi (3,252.73 km) |
| San Marino to Broadlands (Virginia) | 2,259.12 mi (3,635.70 km) |
| San Marino to Broadview Heights (Ohio) | 2,036.38 mi (3,277.24 km) |
| San Marino to Brock Hall (Maryland) | 2,301.28 mi (3,703.54 km) |
| San Marino to Brockton (Massachusetts) | 2,584.94 mi (4,160.07 km) |
| San Marino to Broken Arrow (Oklahoma) | 1,266.86 mi (2,038.81 km) |
| San Marino to Bronx (New York) | 2,443.46 mi (3,932.36 km) |
