| Irthlingborough to Brownhills | 59.82 mi (96.26 km) |
| Irthlingborough to Broxbourne | 47.01 mi (75.65 km) |
| Irthlingborough to Broxburn | 274.88 mi (442.38 km) |
| Irthlingborough to Bryn | 117.62 mi (189.30 km) |
| Irthlingborough to Buckhurst Hill | 55.24 mi (88.90 km) |
| Irthlingborough to Buckie | 381.28 mi (613.62 km) |
| Irthlingborough to Buckingham | 27.66 mi (44.52 km) |
| Irthlingborough to Buckley | 118.83 mi (191.23 km) |
| Irthlingborough to Bucksburn | 341.01 mi (548.81 km) |
| Irthlingborough to Bude | 197.93 mi (318.54 km) |
| Irthlingborough to Bulwell | 52.77 mi (84.93 km) |
| Irthlingborough to Burbage | 33.99 mi (54.70 km) |
| Irthlingborough to Burgess Hill | 96.97 mi (156.07 km) |
| Irthlingborough to Burnham | 54.20 mi (87.23 km) |
| Irthlingborough to Burnham-on-Sea | 126.40 mi (203.42 km) |
