| Merthyr Tudful to Leigh | 126.51 mi (203.60 km) |
| Merthyr Tudful to Leigh-on-Sea | 173.39 mi (279.04 km) |
| Merthyr Tudful to Leighton Buzzard | 116.60 mi (187.64 km) |
| Merthyr Tudful to Leith | 292.87 mi (471.33 km) |
| Merthyr Tudful to Lemington | 233.29 mi (375.44 km) |
| Merthyr Tudful to Leominster | 43.18 mi (69.49 km) |
| Merthyr Tudful to Lerwick | 587.51 mi (945.51 km) |
| Merthyr Tudful to Letchworth | 135.29 mi (217.73 km) |
| Merthyr Tudful to Leven | 308.00 mi (495.67 km) |
| Merthyr Tudful to Lewes | 158.20 mi (254.60 km) |
| Merthyr Tudful to Leyland | 137.64 mi (221.52 km) |
| Merthyr Tudful to Leyton | 144.63 mi (232.76 km) |
| Merthyr Tudful to Lichfield | 92.24 mi (148.45 km) |
| Merthyr Tudful to Lincoln | 157.46 mi (253.41 km) |
| Merthyr Tudful to Linlithgow | 292.84 mi (471.28 km) |
