| Gaithersburg to Billingham | 3,552.63 mi (5,717.41 km) |
| Gaithersburg to Bilston | 3,560.52 mi (5,730.10 km) |
| Gaithersburg to Binfield | 3,636.13 mi (5,851.79 km) |
| Gaithersburg to Bingham | 3,597.52 mi (5,789.64 km) |
| Gaithersburg to Bingley | 3,545.04 mi (5,705.19 km) |
| Gaithersburg to Birchington | 3,722.78 mi (5,991.24 km) |
| Gaithersburg to Birkenhead | 3,507.04 mi (5,644.03 km) |
| Gaithersburg to Birmingham | 3,569.09 mi (5,743.90 km) |
| Gaithersburg to Birstall | 3,554.12 mi (5,719.80 km) |
| Gaithersburg to Birstall | 3,596.56 mi (5,788.10 km) |
| Gaithersburg to Bishop Auckland | 3,536.01 mi (5,690.66 km) |
| Gaithersburg to Bishopbriggs | 3,417.93 mi (5,500.63 km) |
| Gaithersburg to Bishops Cleeve | 3,573.50 mi (5,750.99 km) |
| Gaithersburg to Bishops Stortford | 3,665.65 mi (5,899.29 km) |
| Gaithersburg to Bishopstoke | 3,624.25 mi (5,832.67 km) |
