| Merthyr Tudful to La Crosse (Wisconsin) | 3,862.95 mi (6,216.82 km) |
| Merthyr Tudful to La Grande (Oregon) | 4,690.66 mi (7,548.89 km) |
| Merthyr Tudful to La Grange (Illinois) | 3,828.31 mi (6,161.08 km) |
| Merthyr Tudful to La Grange Park (Illinois) | 3,827.16 mi (6,159.23 km) |
| Merthyr Tudful to La Habra (California) | 5,321.49 mi (8,564.10 km) |
| Merthyr Tudful to La Homa (Texas) | 5,014.36 mi (8,069.84 km) |
| Merthyr Tudful to La Marque (Texas) | 4,718.50 mi (7,593.69 km) |
| Merthyr Tudful to La Mesa (California) | 5,355.55 mi (8,618.93 km) |
| Merthyr Tudful to La Mirada (California) | 5,324.85 mi (8,569.52 km) |
| Merthyr Tudful to La Palma (California) | 5,328.83 mi (8,575.92 km) |
| Merthyr Tudful to La Porte (Indiana) | 3,792.58 mi (6,103.56 km) |
| Merthyr Tudful to La Porte (Texas) | 4,705.20 mi (7,572.28 km) |
| Merthyr Tudful to La Presa (California) | 5,358.29 mi (8,623.33 km) |
| Merthyr Tudful to La Puente (California) | 5,315.68 mi (8,554.75 km) |
| Merthyr Tudful to La Quinta (California) | 5,280.97 mi (8,498.89 km) |
