| Potomac to Bispham | 3,502.52 mi (5,636.76 km) |
| Potomac to Blackburn | 3,526.42 mi (5,675.22 km) |
| Potomac to Blackpool | 3,502.83 mi (5,637.26 km) |
| Potomac to Blairgowrie | 3,445.98 mi (5,545.77 km) |
| Potomac to Blandford Forum | 3,596.52 mi (5,788.03 km) |
| Potomac to Blaydon | 3,534.00 mi (5,687.43 km) |
| Potomac to Bletchley | 3,631.13 mi (5,843.73 km) |
| Potomac to Bloxwich | 3,567.09 mi (5,740.67 km) |
| Potomac to Blunsdon Saint Andrew | 3,596.14 mi (5,787.44 km) |
| Potomac to Blyth | 3,538.92 mi (5,695.34 km) |
| Potomac to Bo'ness | 3,444.67 mi (5,543.67 km) |
| Potomac to Bodmin | 3,497.67 mi (5,628.96 km) |
| Potomac to Bognor Regis | 3,659.79 mi (5,889.87 km) |
| Potomac to Bolsover | 3,583.49 mi (5,767.07 km) |
| Potomac to Bolton | 3,531.65 mi (5,683.64 km) |
