| Irthlingborough to Barking | 61.71 mi (99.32 km) |
| Irthlingborough to Barnet | 50.16 mi (80.72 km) |
| Irthlingborough to Barnoldswick | 127.85 mi (205.75 km) |
| Irthlingborough to Barnsley | 92.35 mi (148.62 km) |
| Irthlingborough to Barnstaple | 170.74 mi (274.78 km) |
| Irthlingborough to Barrhead | 284.77 mi (458.29 km) |
| Irthlingborough to Barri | 129.89 mi (209.03 km) |
| Irthlingborough to Barrow in Furness | 164.05 mi (264.01 km) |
| Irthlingborough to Barton upon Humber | 94.17 mi (151.54 km) |
| Irthlingborough to Barton upon Irwell | 107.84 mi (173.55 km) |
| Irthlingborough to Barwell | 35.15 mi (56.57 km) |
| Irthlingborough to Basford | 50.82 mi (81.79 km) |
| Irthlingborough to Basildon | 69.66 mi (112.11 km) |
| Irthlingborough to Basingstoke | 75.80 mi (121.99 km) |
| Irthlingborough to Bath | 99.02 mi (159.37 km) |
