| Hertford to Karis | 1,073.16 mi (1,727.09 km) |
| Hertford to Karkkila | 1,102.70 mi (1,774.62 km) |
| Hertford to Kauhajoki | 1,102.11 mi (1,773.67 km) |
| Hertford to Kauhava | 1,150.25 mi (1,851.16 km) |
| Hertford to Kauniainen | 1,111.16 mi (1,788.24 km) |
| Hertford to Kemi | 1,289.61 mi (2,075.42 km) |
| Hertford to Kemijarvi | 1,393.96 mi (2,243.36 km) |
| Hertford to Kempele | 1,279.78 mi (2,059.60 km) |
| Hertford to Kerava | 1,127.35 mi (1,814.29 km) |
| Hertford to Keuruu | 1,167.08 mi (1,878.23 km) |
| Hertford to Kiiminki | 1,294.59 mi (2,083.44 km) |
| Hertford to Kirkkonummi | 1,098.54 mi (1,767.94 km) |
| Hertford to Kitee | 1,324.27 mi (2,131.20 km) |
| Hertford to Kiuruvesi | 1,264.49 mi (2,035.00 km) |
| Hertford to Kivisto | 1,117.35 mi (1,798.19 km) |
