| Irthlingborough to Bonhill | 299.05 mi (481.28 km) |
| Irthlingborough to Bonnyrigg | 265.20 mi (426.81 km) |
| Irthlingborough to Bootle | 125.74 mi (202.35 km) |
| Irthlingborough to Borehamwood | 48.27 mi (77.68 km) |
| Irthlingborough to Boscombe | 122.40 mi (196.99 km) |
| Irthlingborough to Boston | 51.32 mi (82.60 km) |
| Irthlingborough to Bottesford | 84.89 mi (136.61 km) |
| Irthlingborough to Bourne | 32.27 mi (51.94 km) |
| Irthlingborough to Bournemouth | 123.46 mi (198.70 km) |
| Irthlingborough to Bournville | 56.22 mi (90.47 km) |
| Irthlingborough to Bovingdon | 41.65 mi (67.03 km) |
| Irthlingborough to Bowdon | 103.08 mi (165.90 km) |
| Irthlingborough to Boxley | 86.16 mi (138.67 km) |
| Irthlingborough to Brackley | 30.28 mi (48.73 km) |
| Irthlingborough to Bracknell | 63.00 mi (101.39 km) |
