| Potomac to Billingham | 3,557.70 mi (5,725.57 km) |
| Potomac to Bilston | 3,565.27 mi (5,737.75 km) |
| Potomac to Binfield | 3,640.75 mi (5,859.23 km) |
| Potomac to Bingham | 3,602.35 mi (5,797.43 km) |
| Potomac to Bingley | 3,549.98 mi (5,713.14 km) |
| Potomac to Birchington | 3,727.46 mi (5,998.77 km) |
| Potomac to Birkenhead | 3,511.89 mi (5,651.84 km) |
| Potomac to Birmingham | 3,573.84 mi (5,751.53 km) |
| Potomac to Birstall | 3,559.05 mi (5,727.74 km) |
| Potomac to Birstall | 3,601.35 mi (5,795.81 km) |
| Potomac to Bishop Auckland | 3,541.08 mi (5,698.81 km) |
| Potomac to Bishopbriggs | 3,423.12 mi (5,508.99 km) |
| Potomac to Bishops Cleeve | 3,578.15 mi (5,758.48 km) |
| Potomac to Bishops Stortford | 3,670.36 mi (5,906.87 km) |
| Potomac to Bishopstoke | 3,628.79 mi (5,839.98 km) |
