| Irthlingborough to Kavak | 1,877.14 mi (3,020.97 km) |
| Irthlingborough to Kayapinar | 2,185.09 mi (3,516.56 km) |
| Irthlingborough to Kayseri | 1,956.08 mi (3,148.01 km) |
| Irthlingborough to Kemalpasa | 1,648.25 mi (2,652.60 km) |
| Irthlingborough to Kemer | 1,858.87 mi (2,991.56 km) |
| Irthlingborough to Keskin | 1,837.06 mi (2,956.46 km) |
| Irthlingborough to Kilimli | 1,685.98 mi (2,713.33 km) |
| Irthlingborough to Kilis | 2,114.73 mi (3,403.33 km) |
| Irthlingborough to Kinik | 1,614.63 mi (2,598.50 km) |
| Irthlingborough to Kirikkale | 1,825.54 mi (2,937.92 km) |
| Irthlingborough to Kirkagac | 1,625.55 mi (2,616.07 km) |
| Irthlingborough to Kirklareli | 1,488.05 mi (2,394.79 km) |
| Irthlingborough to Kirsehir | 1,882.88 mi (3,030.20 km) |
| Irthlingborough to Kizilpinar | 1,538.22 mi (2,475.53 km) |
| Irthlingborough to Kiziltepe | 2,235.19 mi (3,597.19 km) |
