| Irthlingborough to Karis | 1,066.83 mi (1,716.90 km) |
| Irthlingborough to Karkkila | 1,095.45 mi (1,762.95 km) |
| Irthlingborough to Kauhajoki | 1,089.18 mi (1,752.86 km) |
| Irthlingborough to Kauhava | 1,136.38 mi (1,828.83 km) |
| Irthlingborough to Kauniainen | 1,104.94 mi (1,778.24 km) |
| Irthlingborough to Kemi | 1,271.46 mi (2,046.22 km) |
| Irthlingborough to Kemijarvi | 1,375.49 mi (2,213.64 km) |
| Irthlingborough to Kempele | 1,263.59 mi (2,033.55 km) |
| Irthlingborough to Kerava | 1,120.84 mi (1,803.81 km) |
| Irthlingborough to Keuruu | 1,155.96 mi (1,860.33 km) |
| Irthlingborough to Kiiminki | 1,278.12 mi (2,056.94 km) |
| Irthlingborough to Kirkkonummi | 1,092.44 mi (1,758.12 km) |
| Irthlingborough to Kitee | 1,315.71 mi (2,117.43 km) |
| Irthlingborough to Kiuruvesi | 1,251.30 mi (2,013.77 km) |
| Irthlingborough to Kivisto | 1,110.91 mi (1,787.84 km) |
