| Potomac to Bound Brook (New Jersey) | 177.20 mi (285.17 km) |
| Potomac to Bountiful (Utah) | 1,829.06 mi (2,943.59 km) |
| Potomac to Bourbonnais (Illinois) | 583.79 mi (939.52 km) |
| Potomac to Bowie (Maryland) | 24.71 mi (39.76 km) |
| Potomac to Bowling Green (Kentucky) | 522.46 mi (840.82 km) |
| Potomac to Bowling Green (Ohio) | 377.66 mi (607.79 km) |
| Potomac to Box Elder (South Dakota) | 1,377.56 mi (2,216.96 km) |
| Potomac to Boynton Beach (Florida) | 878.71 mi (1,414.14 km) |
| Potomac to Bozeman (Montana) | 1,774.91 mi (2,856.45 km) |
| Potomac to Bradenton (Florida) | 854.34 mi (1,374.93 km) |
| Potomac to Bradfordville (Florida) | 705.41 mi (1,135.25 km) |
| Potomac to Bradley (Illinois) | 581.84 mi (936.39 km) |
| Potomac to Bradley Gardens (New Jersey) | 171.93 mi (276.69 km) |
| Potomac to Brainerd (Minnesota) | 998.50 mi (1,606.93 km) |
| Potomac to Brambleton (Virginia) | 18.30 mi (29.45 km) |
