| Irthlingborough to Kaneohe (Hawaii) | 7,159.96 mi (11,522.84 km) |
| Irthlingborough to Kankakee (Illinois) | 3,948.81 mi (6,355.00 km) |
| Irthlingborough to Kannapolis (North Carolina) | 3,934.02 mi (6,331.19 km) |
| Irthlingborough to Kansas City (Kansas) | 4,302.61 mi (6,924.38 km) |
| Irthlingborough to Kansas City (Missouri) | 4,295.57 mi (6,913.05 km) |
| Irthlingborough to Kapaa (Hawaii) | 7,137.62 mi (11,486.89 km) |
| Irthlingborough to Kapolei (Hawaii) | 7,168.73 mi (11,536.96 km) |
| Irthlingborough to Katy (Texas) | 4,824.14 mi (7,763.70 km) |
| Irthlingborough to Kaukauna (Wisconsin) | 3,814.98 mi (6,139.62 km) |
| Irthlingborough to Kaysville (Utah) | 4,795.09 mi (7,716.95 km) |
| Irthlingborough to Kearney (Missouri) | 4,276.84 mi (6,882.91 km) |
| Irthlingborough to Kearney (Nebraska) | 4,379.93 mi (7,048.82 km) |
| Irthlingborough to Kearns (Utah) | 4,817.82 mi (7,753.53 km) |
| Irthlingborough to Kearny (New Jersey) | 3,426.99 mi (5,515.21 km) |
| Irthlingborough to Keene (New Hampshire) | 3,258.99 mi (5,244.83 km) |
