| Harpenden to Lasko | 805.57 mi (1,296.45 km) |
| Harpenden to Lenart v Slovenskih Goricah | 813.22 mi (1,308.75 km) |
| Harpenden to Lendava | 838.57 mi (1,349.55 km) |
| Harpenden to Litija | 792.61 mi (1,275.59 km) |
| Harpenden to Ljubljana | 781.15 mi (1,257.15 km) |
| Harpenden to Ljubno | 782.69 mi (1,259.62 km) |
| Harpenden to Ljutomer | 830.22 mi (1,336.11 km) |
| Harpenden to Logatec | 776.02 mi (1,248.89 km) |
| Harpenden to Lovrenc na Pohorju | 796.66 mi (1,282.10 km) |
| Harpenden to Luce | 778.25 mi (1,252.48 km) |
| Harpenden to Lukovica | 783.55 mi (1,261.01 km) |
| Harpenden to Majsperk | 817.67 mi (1,315.92 km) |
| Harpenden to Makole | 816.27 mi (1,313.66 km) |
| Harpenden to Maribor | 806.36 mi (1,297.72 km) |
| Harpenden to Markovci | 823.85 mi (1,325.86 km) |
