| Merthyr Tudful to Leini | 679.52 mi (1,093.58 km) |
| Merthyr Tudful to Lendinara | 824.27 mi (1,326.54 km) |
| Merthyr Tudful to Leno | 759.89 mi (1,222.93 km) |
| Merthyr Tudful to Lentate sul Seveso | 705.80 mi (1,135.87 km) |
| Merthyr Tudful to Lentini | 1,340.72 mi (2,157.68 km) |
| Merthyr Tudful to Leonforte | 1,301.23 mi (2,094.13 km) |
| Merthyr Tudful to Lequile | 1,291.81 mi (2,078.97 km) |
| Merthyr Tudful to Lerici | 809.82 mi (1,303.28 km) |
| Merthyr Tudful to Leverano | 1,290.76 mi (2,077.28 km) |
| Merthyr Tudful to Licata | 1,317.21 mi (2,119.84 km) |
| Merthyr Tudful to Limbiate | 709.78 mi (1,142.28 km) |
| Merthyr Tudful to Lipari | 1,273.77 mi (2,049.93 km) |
| Merthyr Tudful to Lissone | 713.27 mi (1,147.89 km) |
| Merthyr Tudful to Livorno | 849.65 mi (1,367.38 km) |
| Merthyr Tudful to Lizzanello | 1,294.85 mi (2,083.86 km) |
