| Potomac to Benisa | 4,018.44 mi (6,467.06 km) |
| Potomac to Berga | 3,999.33 mi (6,436.29 km) |
| Potomac to Berja | 3,930.48 mi (6,325.50 km) |
| Potomac to Bermeo | 3,750.45 mi (6,035.76 km) |
| Potomac to Berriozar | 3,815.24 mi (6,140.04 km) |
| Potomac to Betanzos | 3,497.65 mi (5,628.93 km) |
| Potomac to Betera | 3,966.67 mi (6,383.74 km) |
| Potomac to Bilbao | 3,745.67 mi (6,028.08 km) |
| Potomac to Binefar | 3,935.08 mi (6,332.89 km) |
| Potomac to Binisalem | 4,120.32 mi (6,631.01 km) |
| Potomac to Blanes | 4,056.00 mi (6,527.49 km) |
| Potomac to Boadilla del Monte | 3,779.29 mi (6,082.17 km) |
| Potomac to Boiro | 3,480.05 mi (5,600.60 km) |
| Potomac to Bolanos de Calatrava | 3,830.99 mi (6,165.38 km) |
| Potomac to Bollullos de la Mitacion | 3,757.90 mi (6,047.76 km) |
