| Potomac to Beacon (New York) | 241.98 mi (389.42 km) |
| Potomac to Bear (Delaware) | 91.06 mi (146.54 km) |
| Potomac to Beatrice (Nebraska) | 1,041.70 mi (1,676.46 km) |
| Potomac to Beaufort (South Carolina) | 494.12 mi (795.20 km) |
| Potomac to Beaumont (California) | 2,220.78 mi (3,573.99 km) |
| Potomac to Beaumont (Texas) | 1,142.09 mi (1,838.02 km) |
| Potomac to Beaver Dam (Wisconsin) | 677.55 mi (1,090.42 km) |
| Potomac to Beavercreek (Ohio) | 370.07 mi (595.57 km) |
| Potomac to Beaverton (Oregon) | 2,343.32 mi (3,771.22 km) |
| Potomac to Beckley (West Virginia) | 232.03 mi (373.42 km) |
| Potomac to Bedford (Indiana) | 499.45 mi (803.79 km) |
| Potomac to Bedford (Ohio) | 281.87 mi (453.63 km) |
| Potomac to Bedford (Texas) | 1,191.12 mi (1,916.92 km) |
| Potomac to Bedford Heights (Ohio) | 281.03 mi (452.28 km) |
| Potomac to Beech Grove (Indiana) | 477.30 mi (768.14 km) |
