| Irthlingborough to Blue Springs (Missouri) | 4,290.71 mi (6,905.22 km) |
| Irthlingborough to Bluffdale (Utah) | 4,825.30 mi (7,765.56 km) |
| Irthlingborough to Bluffton (Indiana) | 3,863.10 mi (6,217.05 km) |
| Irthlingborough to Bluffton (South Carolina) | 4,104.84 mi (6,606.10 km) |
| Irthlingborough to Blythe (California) | 5,294.79 mi (8,521.14 km) |
| Irthlingborough to Blytheville (Arkansas) | 4,278.80 mi (6,886.06 km) |
| Irthlingborough to Boca Raton (Florida) | 4,364.13 mi (7,023.39 km) |
| Irthlingborough to Boerne (Texas) | 4,936.10 mi (7,943.88 km) |
| Irthlingborough to Bogalusa (Louisiana) | 4,537.63 mi (7,302.61 km) |
| Irthlingborough to Boiling Springs (South Carolina) | 4,008.81 mi (6,451.55 km) |
| Irthlingborough to Boise (Idaho) | 4,783.98 mi (7,699.07 km) |
| Irthlingborough to Bolingbrook (Illinois) | 3,929.92 mi (6,324.59 km) |
| Irthlingborough to Bolivar (Missouri) | 4,329.26 mi (6,967.26 km) |
| Irthlingborough to Bon Air (Virginia) | 3,713.18 mi (5,975.78 km) |
| Irthlingborough to Bonham (Texas) | 4,639.33 mi (7,466.27 km) |
