| Irthlingborough to Bispham | 145.89 mi (234.79 km) |
| Irthlingborough to Blackburn | 125.30 mi (201.66 km) |
| Irthlingborough to Blackpool | 144.31 mi (232.25 km) |
| Irthlingborough to Blairgowrie | 314.48 mi (506.10 km) |
| Irthlingborough to Blandford Forum | 121.32 mi (195.25 km) |
| Irthlingborough to Blaydon | 187.86 mi (302.34 km) |
| Irthlingborough to Bletchley | 23.34 mi (37.57 km) |
| Irthlingborough to Bloxwich | 61.84 mi (99.52 km) |
| Irthlingborough to Blunsdon Saint Andrew | 70.28 mi (113.11 km) |
| Irthlingborough to Blyth | 197.06 mi (317.14 km) |
| Irthlingborough to Bo'ness | 282.38 mi (454.44 km) |
| Irthlingborough to Bodmin | 218.54 mi (351.70 km) |
| Irthlingborough to Bognor Regis | 106.55 mi (171.47 km) |
| Irthlingborough to Bolsover | 68.66 mi (110.50 km) |
| Irthlingborough to Bolton | 114.95 mi (185.00 km) |
