| Merthyr Tudful to Lormont | 491.97 mi (791.75 km) |
| Merthyr Tudful to Loudeac | 247.89 mi (398.94 km) |
| Merthyr Tudful to Lourdes | 617.33 mi (993.49 km) |
| Merthyr Tudful to Louviers | 265.26 mi (426.90 km) |
| Merthyr Tudful to Louvres | 319.11 mi (513.56 km) |
| Merthyr Tudful to Luce | 313.27 mi (504.17 km) |
| Merthyr Tudful to Lucon | 378.80 mi (609.61 km) |
| Merthyr Tudful to Lunel | 656.95 mi (1,057.26 km) |
| Merthyr Tudful to Luneville | 488.00 mi (785.35 km) |
| Merthyr Tudful to Lyon | 557.03 mi (896.45 km) |
| Merthyr Tudful to Lys-les-Lannoy | 294.70 mi (474.28 km) |
| Merthyr Tudful to Macon | 528.01 mi (849.74 km) |
| Merthyr Tudful to Magny-le-Hongre | 337.83 mi (543.69 km) |
| Merthyr Tudful to Magny-les-Hameaux | 318.90 mi (513.21 km) |
| Merthyr Tudful to Mainvilliers | 312.41 mi (502.78 km) |
