| Llantrisant to Mountain Brook (Alabama) | 4,182.12 mi (6,730.48 km) |
| Llantrisant to Mountain Home (Arkansas) | 4,269.58 mi (6,871.23 km) |
| Llantrisant to Mountain Home (Idaho) | 4,747.85 mi (7,640.93 km) |
| Llantrisant to Mountain House (California) | 5,228.35 mi (8,414.22 km) |
| Llantrisant to Mountain Park (Georgia) | 4,057.68 mi (6,530.20 km) |
| Llantrisant to Mountain Top (Pennsylvania) | 3,387.16 mi (5,451.10 km) |
| Llantrisant to Mountain View (California) | 5,265.81 mi (8,474.50 km) |
| Llantrisant to Mountlake Terrace (Washington) | 4,684.34 mi (7,538.71 km) |
| Llantrisant to Mukilteo (Washington) | 4,677.66 mi (7,527.96 km) |
| Llantrisant to Muncie (Indiana) | 3,810.77 mi (6,132.85 km) |
| Llantrisant to Mundelein (Illinois) | 3,818.68 mi (6,145.57 km) |
| Llantrisant to Munhall (Pennsylvania) | 3,581.97 mi (5,764.63 km) |
| Llantrisant to Munster (Indiana) | 3,831.99 mi (6,166.99 km) |
| Llantrisant to Murfreesboro (Tennessee) | 4,054.87 mi (6,525.68 km) |
| Llantrisant to Murphy (Texas) | 4,601.10 mi (7,404.75 km) |
