| Llantrisant to Morristown (New Jersey) | 3,343.04 mi (5,380.11 km) |
| Llantrisant to Morristown (Tennessee) | 3,911.44 mi (6,294.85 km) |
| Llantrisant to Morrisville (North Carolina) | 3,744.40 mi (6,026.03 km) |
| Llantrisant to Morro Bay (California) | 5,343.17 mi (8,599.00 km) |
| Llantrisant to Morton (Illinois) | 3,951.16 mi (6,358.77 km) |
| Llantrisant to Morton Grove (Illinois) | 3,820.46 mi (6,148.44 km) |
| Llantrisant to Moscow (Idaho) | 4,592.09 mi (7,390.26 km) |
| Llantrisant to Moses Lake (Washington) | 4,636.48 mi (7,461.69 km) |
| Llantrisant to Moss Bluff (Louisiana) | 4,603.48 mi (7,408.58 km) |
| Llantrisant to Moss Point (Mississippi) | 4,406.65 mi (7,091.81 km) |
| Llantrisant to Moultrie (Georgia) | 4,173.13 mi (6,716.00 km) |
| Llantrisant to Mounds View (Minnesota) | 3,884.33 mi (6,251.22 km) |
| Llantrisant to Mount Airy (North Carolina) | 3,787.04 mi (6,094.65 km) |
| Llantrisant to Mount Clemens (Michigan) | 3,604.25 mi (5,800.48 km) |
| Llantrisant to Mount Dora (Florida) | 4,198.88 mi (6,757.45 km) |
