| Hertford to Klaukkala | 1,115.71 mi (1,795.56 km) |
| Hertford to Kokkola | 1,179.65 mi (1,898.46 km) |
| Hertford to Kontiolahti | 1,331.25 mi (2,142.43 km) |
| Hertford to Korsholm | 1,114.39 mi (1,793.44 km) |
| Hertford to Kotka | 1,188.12 mi (1,912.10 km) |
| Hertford to Kouvola | 1,189.51 mi (1,914.33 km) |
| Hertford to Kuhmo | 1,358.08 mi (2,185.62 km) |
| Hertford to Kuopio | 1,271.24 mi (2,045.86 km) |
| Hertford to Kurikka | 1,114.79 mi (1,794.08 km) |
| Hertford to Kuusamo | 1,407.76 mi (2,265.58 km) |
| Hertford to Kuusankoski | 1,187.90 mi (1,911.74 km) |
| Hertford to Lahti | 1,159.18 mi (1,865.52 km) |
| Hertford to Laitila | 1,035.67 mi (1,666.75 km) |
| Hertford to Lapinlahti | 1,276.74 mi (2,054.72 km) |
| Hertford to Lappeenranta | 1,240.87 mi (1,996.99 km) |
