| Gainsborough to Bonhill | 233.95 mi (376.50 km) |
| Gainsborough to Bonnyrigg | 194.60 mi (313.17 km) |
| Gainsborough to Bootle | 91.28 mi (146.90 km) |
| Gainsborough to Borehamwood | 122.31 mi (196.84 km) |
| Gainsborough to Boscombe | 190.40 mi (306.42 km) |
| Gainsborough to Boston | 42.91 mi (69.06 km) |
| Gainsborough to Bottesford | 11.21 mi (18.04 km) |
| Gainsborough to Bourne | 46.73 mi (75.20 km) |
| Gainsborough to Bournemouth | 191.15 mi (307.62 km) |
| Gainsborough to Bournville | 82.78 mi (133.22 km) |
| Gainsborough to Bovingdon | 116.40 mi (187.32 km) |
| Gainsborough to Bowdon | 65.66 mi (105.66 km) |
| Gainsborough to Boxley | 155.31 mi (249.94 km) |
| Gainsborough to Brackley | 95.91 mi (154.36 km) |
| Gainsborough to Bracknell | 137.20 mi (220.79 km) |
