| Llantrisant to Monticello (Minnesota) | 3,897.05 mi (6,271.70 km) |
| Llantrisant to Montrose (Colorado) | 4,737.80 mi (7,624.76 km) |
| Llantrisant to Moody (Alabama) | 4,166.73 mi (6,705.71 km) |
| Llantrisant to Moore (Oklahoma) | 4,517.56 mi (7,270.32 km) |
| Llantrisant to Moorestown-Lenola (New Jersey) | 3,398.81 mi (5,469.85 km) |
| Llantrisant to Mooresville (North Carolina) | 3,838.74 mi (6,177.85 km) |
| Llantrisant to Moorhead (Minnesota) | 3,929.74 mi (6,324.31 km) |
| Llantrisant to Moorpark (California) | 5,340.78 mi (8,595.15 km) |
| Llantrisant to Moraga (California) | 5,241.77 mi (8,435.81 km) |
| Llantrisant to Moreno Valley (California) | 5,305.65 mi (8,538.62 km) |
| Llantrisant to Morgan City (Louisiana) | 4,552.07 mi (7,325.85 km) |
| Llantrisant to Morgan Hill (California) | 5,267.55 mi (8,477.30 km) |
| Llantrisant to Morganton (North Carolina) | 3,867.50 mi (6,224.14 km) |
| Llantrisant to Morgantown (West Virginia) | 3,617.34 mi (5,821.55 km) |
| Llantrisant to Morris (Illinois) | 3,875.78 mi (6,237.47 km) |
