| Watertown Town to Bonhill | 3,021.08 mi (4,861.97 km) |
| Watertown Town to Bonnyrigg | 3,078.08 mi (4,953.70 km) |
| Watertown Town to Bootle | 3,121.84 mi (5,024.12 km) |
| Watertown Town to Borehamwood | 3,266.29 mi (5,256.58 km) |
| Watertown Town to Boscombe | 3,221.73 mi (5,184.88 km) |
| Watertown Town to Boston | 3,248.86 mi (5,228.53 km) |
| Watertown Town to Bottesford | 3,211.68 mi (5,168.70 km) |
| Watertown Town to Bourne | 3,238.84 mi (5,212.41 km) |
| Watertown Town to Bournemouth | 3,220.18 mi (5,182.37 km) |
| Watertown Town to Bournville | 3,182.96 mi (5,122.48 km) |
| Watertown Town to Bovingdon | 3,254.12 mi (5,237.00 km) |
| Watertown Town to Bowdon | 3,147.87 mi (5,066.01 km) |
| Watertown Town to Boxley | 3,307.35 mi (5,322.66 km) |
| Watertown Town to Brackley | 3,222.86 mi (5,186.69 km) |
| Watertown Town to Bracknell | 3,252.00 mi (5,233.58 km) |
