| Llantrisant to Medford (New York) | 3,280.43 mi (5,279.35 km) |
| Llantrisant to Medford (Oregon) | 5,007.42 mi (8,058.66 km) |
| Llantrisant to Medina (Ohio) | 3,628.37 mi (5,839.30 km) |
| Llantrisant to Medulla (Florida) | 4,256.33 mi (6,849.90 km) |
| Llantrisant to Mehlville (Missouri) | 4,083.74 mi (6,572.14 km) |
| Llantrisant to Melbourne (Florida) | 4,192.72 mi (6,747.53 km) |
| Llantrisant to Melissa (Texas) | 4,585.26 mi (7,379.27 km) |
| Llantrisant to Melrose (Massachusetts) | 3,133.12 mi (5,042.26 km) |
| Llantrisant to Melrose Park (Illinois) | 3,829.69 mi (6,163.29 km) |
| Llantrisant to Melville (New York) | 3,299.59 mi (5,310.18 km) |
| Llantrisant to Melvindale (Michigan) | 3,629.84 mi (5,841.66 km) |
| Llantrisant to Memphis (Florida) | 4,301.25 mi (6,922.19 km) |
| Llantrisant to Memphis (Tennessee) | 4,233.65 mi (6,813.41 km) |
| Llantrisant to Menasha (Wisconsin) | 3,747.11 mi (6,030.39 km) |
| Llantrisant to Mendota (California) | 5,249.37 mi (8,448.04 km) |
