| Merthyr Tudful to Lizzano | 1,261.87 mi (2,030.78 km) |
| Merthyr Tudful to Locate di Triulzi | 724.27 mi (1,165.60 km) |
| Merthyr Tudful to Locorotondo | 1,239.55 mi (1,994.87 km) |
| Merthyr Tudful to Locri | 1,330.49 mi (2,141.22 km) |
| Merthyr Tudful to Lodi | 736.05 mi (1,184.56 km) |
| Merthyr Tudful to Lomazzo | 701.59 mi (1,129.10 km) |
| Merthyr Tudful to Lonate Pozzolo | 695.91 mi (1,119.96 km) |
| Merthyr Tudful to Lonigo | 803.11 mi (1,292.47 km) |
| Merthyr Tudful to Loreto | 973.75 mi (1,567.09 km) |
| Merthyr Tudful to Loria | 806.96 mi (1,298.68 km) |
| Merthyr Tudful to Lucca | 842.03 mi (1,355.11 km) |
| Merthyr Tudful to Lucera | 1,129.79 mi (1,818.22 km) |
| Merthyr Tudful to Lugo | 865.94 mi (1,393.59 km) |
| Merthyr Tudful to Luino | 677.75 mi (1,090.73 km) |
| Merthyr Tudful to Lurate Caccivio | 697.36 mi (1,122.29 km) |
