| Merthyr Tudful to Linslade | 115.98 mi (186.65 km) |
| Merthyr Tudful to Lisburn | 220.97 mi (355.62 km) |
| Merthyr Tudful to Liskeard | 100.80 mi (162.23 km) |
| Merthyr Tudful to Litherland | 120.56 mi (194.03 km) |
| Merthyr Tudful to Little Bookham | 132.40 mi (213.08 km) |
| Merthyr Tudful to Little Hulton | 129.86 mi (208.99 km) |
| Merthyr Tudful to Little Lever | 132.67 mi (213.51 km) |
| Merthyr Tudful to Littleborough | 141.86 mi (228.30 km) |
| Merthyr Tudful to Littlehampton | 138.54 mi (222.97 km) |
| Merthyr Tudful to Littleover | 112.74 mi (181.45 km) |
| Merthyr Tudful to Littleport | 163.88 mi (263.73 km) |
| Merthyr Tudful to Liverpool | 116.14 mi (186.91 km) |
| Merthyr Tudful to Liversedge | 152.95 mi (246.16 km) |
| Merthyr Tudful to Livingston | 286.13 mi (460.48 km) |
| Merthyr Tudful to Llanelli | 33.85 mi (54.48 km) |
