| Hertford to Lapua | 1,143.96 mi (1,841.03 km) |
| Hertford to Laukaa | 1,207.66 mi (1,943.55 km) |
| Hertford to Lauritsala | 1,243.38 mi (2,001.03 km) |
| Hertford to Lempaala | 1,110.29 mi (1,786.84 km) |
| Hertford to Leppavirta | 1,263.36 mi (2,033.19 km) |
| Hertford to Lieksa | 1,349.96 mi (2,172.55 km) |
| Hertford to Lieto | 1,046.72 mi (1,684.53 km) |
| Hertford to Liminka | 1,273.62 mi (2,049.70 km) |
| Hertford to Liperi | 1,311.68 mi (2,110.94 km) |
| Hertford to Lohja | 1,090.64 mi (1,755.22 km) |
| Hertford to Loimaa | 1,075.61 mi (1,731.03 km) |
| Hertford to Loviisa | 1,165.07 mi (1,875.00 km) |
| Hertford to Mantsala | 1,139.94 mi (1,834.56 km) |
| Hertford to Mariehamn | 957.28 mi (1,540.60 km) |
| Hertford to Masku | 1,038.07 mi (1,670.62 km) |
