| Llantwit Major to Mill Creek East (Washington) | 4,683.11 mi (7,536.74 km) |
| Llantwit Major to Mill Valley (California) | 5,254.45 mi (8,456.22 km) |
| Llantwit Major to Millbrae (California) | 5,267.83 mi (8,477.76 km) |
| Llantwit Major to Millbrook (Alabama) | 4,213.76 mi (6,781.39 km) |
| Llantwit Major to Millcreek (Utah) | 4,757.89 mi (7,657.09 km) |
| Llantwit Major to Milledgeville (Georgia) | 4,055.70 mi (6,527.02 km) |
| Llantwit Major to Miller Place (New York) | 3,274.01 mi (5,269.01 km) |
| Llantwit Major to Millington (Tennessee) | 4,219.37 mi (6,790.42 km) |
| Llantwit Major to Millville (New Jersey) | 3,425.99 mi (5,513.60 km) |
| Llantwit Major to Milpitas (California) | 5,261.54 mi (8,467.62 km) |
| Llantwit Major to Milton (Georgia) | 4,049.88 mi (6,517.65 km) |
| Llantwit Major to Milwaukee (Wisconsin) | 3,781.52 mi (6,085.76 km) |
| Llantwit Major to Milwaukie (Oregon) | 4,829.13 mi (7,771.73 km) |
| Llantwit Major to Minden (Louisiana) | 4,488.81 mi (7,224.04 km) |
| Llantwit Major to Mineola (New York) | 3,309.08 mi (5,325.46 km) |
