| Merthyr Tudful to Land O' Lakes (Florida) | 4,260.66 mi (6,856.86 km) |
| Merthyr Tudful to Landover (Maryland) | 3,519.80 mi (5,664.56 km) |
| Merthyr Tudful to Langley Park (Maryland) | 3,520.71 mi (5,666.03 km) |
| Merthyr Tudful to Lanham (Maryland) | 3,516.24 mi (5,658.85 km) |
| Merthyr Tudful to Lansdale (Pennsylvania) | 3,395.89 mi (5,465.15 km) |
| Merthyr Tudful to Lansdowne (Pennsylvania) | 3,408.76 mi (5,485.87 km) |
| Merthyr Tudful to Lansdowne (Virginia) | 3,537.13 mi (5,692.47 km) |
| Merthyr Tudful to Lansing (Illinois) | 3,826.75 mi (6,158.57 km) |
| Merthyr Tudful to Lansing (Kansas) | 4,218.19 mi (6,788.52 km) |
| Merthyr Tudful to Lansing (Michigan) | 3,659.03 mi (5,888.64 km) |
| Merthyr Tudful to Lantana (Florida) | 4,241.01 mi (6,825.25 km) |
| Merthyr Tudful to Lantana (Texas) | 4,611.44 mi (7,421.40 km) |
| Merthyr Tudful to Laplace (Louisiana) | 4,499.80 mi (7,241.72 km) |
| Merthyr Tudful to Laramie (Wyoming) | 4,503.22 mi (7,247.24 km) |
| Merthyr Tudful to Laredo (Texas) | 4,991.74 mi (8,033.43 km) |
