| Merthyr Tudful to Lamia | 1,522.98 mi (2,450.99 km) |
| Merthyr Tudful to Larisa | 1,487.11 mi (2,393.27 km) |
| Merthyr Tudful to Lefkada | 1,463.63 mi (2,355.49 km) |
| Merthyr Tudful to Livadeia | 1,562.23 mi (2,514.17 km) |
| Merthyr Tudful to Loutraki | 1,588.83 mi (2,556.97 km) |
| Merthyr Tudful to Lykovrysi | 1,615.44 mi (2,599.79 km) |
| Merthyr Tudful to Mandra | 1,604.48 mi (2,582.16 km) |
| Merthyr Tudful to Marousi | 1,616.89 mi (2,602.14 km) |
| Merthyr Tudful to Megara | 1,601.90 mi (2,578.02 km) |
| Merthyr Tudful to Melissia | 1,618.18 mi (2,604.22 km) |
| Merthyr Tudful to Mesolongi | 1,510.44 mi (2,430.82 km) |
| Merthyr Tudful to Metamorfosi | 1,614.96 mi (2,599.02 km) |
| Merthyr Tudful to Moschato | 1,616.60 mi (2,601.66 km) |
| Merthyr Tudful to Mytilini | 1,676.33 mi (2,697.80 km) |
| Merthyr Tudful to Nafpaktos | 1,524.49 mi (2,453.43 km) |
