| Irthlingborough to Buenaventura Lakes (Florida) | 4,316.21 mi (6,946.27 km) |
| Irthlingborough to Buffalo (Minnesota) | 3,974.35 mi (6,396.10 km) |
| Irthlingborough to Buffalo (New York) | 3,519.86 mi (5,664.67 km) |
| Irthlingborough to Buffalo Grove (Illinois) | 3,902.12 mi (6,279.85 km) |
| Irthlingborough to Buford (Georgia) | 4,134.99 mi (6,654.62 km) |
| Irthlingborough to Bull Run (Virginia) | 3,652.74 mi (5,878.52 km) |
| Irthlingborough to Bullhead City (Arizona) | 5,207.71 mi (8,380.99 km) |
| Irthlingborough to Burbank (California) | 5,382.24 mi (8,661.88 km) |
| Irthlingborough to Burbank (Illinois) | 3,914.80 mi (6,300.26 km) |
| Irthlingborough to Burien (Washington) | 4,734.65 mi (7,619.69 km) |
| Irthlingborough to Burkburnett (Texas) | 4,703.51 mi (7,569.57 km) |
| Irthlingborough to Burke (Virginia) | 3,642.53 mi (5,862.09 km) |
| Irthlingborough to Burke Centre (Virginia) | 3,643.41 mi (5,863.50 km) |
| Irthlingborough to Burleson (Texas) | 4,738.65 mi (7,626.12 km) |
| Irthlingborough to Burley (Idaho) | 4,769.65 mi (7,676.01 km) |
