| Llantwit Major to Merrick (New York) | 3,309.57 mi (5,326.23 km) |
| Llantwit Major to Merrifield (Virginia) | 3,539.23 mi (5,695.84 km) |
| Llantwit Major to Merrillville (Indiana) | 3,828.30 mi (6,161.05 km) |
| Llantwit Major to Merritt Island (Florida) | 4,180.19 mi (6,727.36 km) |
| Llantwit Major to Mesa (Arizona) | 5,147.43 mi (8,283.99 km) |
| Llantwit Major to Mesquite (Nevada) | 5,045.28 mi (8,119.60 km) |
| Llantwit Major to Mesquite (Texas) | 4,613.19 mi (7,424.21 km) |
| Llantwit Major to Metairie (Louisiana) | 4,494.48 mi (7,233.16 km) |
| Llantwit Major to Methuen Town (Massachusetts) | 3,125.77 mi (5,030.44 km) |
| Llantwit Major to Metuchen (New Jersey) | 3,347.70 mi (5,387.60 km) |
| Llantwit Major to Mexico (Missouri) | 4,112.94 mi (6,619.14 km) |
| Llantwit Major to Miami (Florida) | 4,286.54 mi (6,898.52 km) |
| Llantwit Major to Miami (Oklahoma) | 4,339.53 mi (6,983.80 km) |
| Llantwit Major to Miami Beach (Florida) | 4,281.87 mi (6,891.00 km) |
| Llantwit Major to Miami Gardens (Florida) | 4,279.94 mi (6,887.90 km) |
