| Llantwit Major to Manor (Texas) | 4,773.24 mi (7,681.79 km) |
| Llantwit Major to Manorville (New York) | 3,269.29 mi (5,261.42 km) |
| Llantwit Major to Mansfield (Ohio) | 3,670.57 mi (5,907.21 km) |
| Llantwit Major to Mansfield (Texas) | 4,643.96 mi (7,473.74 km) |
| Llantwit Major to Manteca (California) | 5,220.43 mi (8,401.47 km) |
| Llantwit Major to Manville (New Jersey) | 3,357.07 mi (5,402.69 km) |
| Llantwit Major to Maple Grove (Minnesota) | 3,894.87 mi (6,268.19 km) |
| Llantwit Major to Maple Heights (Ohio) | 3,603.49 mi (5,799.26 km) |
| Llantwit Major to Maple Valley (Washington) | 4,705.17 mi (7,572.24 km) |
| Llantwit Major to Mapleton (Utah) | 4,779.84 mi (7,692.40 km) |
| Llantwit Major to Maplewood (Minnesota) | 3,884.54 mi (6,251.56 km) |
| Llantwit Major to Marana (Arizona) | 5,180.01 mi (8,336.41 km) |
| Llantwit Major to Marco Island (Florida) | 4,342.66 mi (6,988.83 km) |
| Llantwit Major to Margate (Florida) | 4,263.44 mi (6,861.34 km) |
| Llantwit Major to Maricopa (Arizona) | 5,177.16 mi (8,331.83 km) |
