| Harpenden to Lingolsheim | 420.47 mi (676.69 km) |
| Harpenden to Lisieux | 186.07 mi (299.46 km) |
| Harpenden to Livron-sur-Drome | 541.84 mi (872.00 km) |
| Harpenden to Livry-Gargan | 237.25 mi (381.81 km) |
| Harpenden to Lognes | 244.32 mi (393.19 km) |
| Harpenden to Lomme | 165.62 mi (266.54 km) |
| Harpenden to Longjumeau | 245.42 mi (394.97 km) |
| Harpenden to Longuenesse | 134.58 mi (216.59 km) |
| Harpenden to Longvic | 395.86 mi (637.07 km) |
| Harpenden to Longwy | 311.09 mi (500.65 km) |
| Harpenden to Lons | 587.47 mi (945.44 km) |
| Harpenden to Lons-le-Saunier | 443.81 mi (714.25 km) |
| Harpenden to Loos | 167.79 mi (270.03 km) |
| Harpenden to Lorgues | 653.88 mi (1,052.32 km) |
| Harpenden to Lorient | 311.36 mi (501.08 km) |
