| Llanelli to Medford (New York) | 3,245.23 mi (5,222.70 km) |
| Llanelli to Medford (Oregon) | 4,977.28 mi (8,010.16 km) |
| Llanelli to Medina (Ohio) | 3,593.30 mi (5,782.86 km) |
| Llanelli to Medulla (Florida) | 4,221.34 mi (6,793.60 km) |
| Llanelli to Mehlville (Missouri) | 4,048.87 mi (6,516.03 km) |
| Llanelli to Melbourne (Florida) | 4,157.80 mi (6,691.33 km) |
| Llanelli to Melissa (Texas) | 4,550.39 mi (7,323.15 km) |
| Llanelli to Melrose (Massachusetts) | 3,097.91 mi (4,985.61 km) |
| Llanelli to Melrose Park (Illinois) | 3,794.96 mi (6,107.40 km) |
| Llanelli to Melville (New York) | 3,264.39 mi (5,253.52 km) |
| Llanelli to Melvindale (Michigan) | 3,594.90 mi (5,785.43 km) |
| Llanelli to Memphis (Florida) | 4,266.26 mi (6,865.88 km) |
| Llanelli to Memphis (Tennessee) | 4,198.58 mi (6,756.96 km) |
| Llanelli to Menasha (Wisconsin) | 3,712.66 mi (5,974.95 km) |
| Llanelli to Mendota (California) | 5,217.77 mi (8,397.19 km) |
