| Cwmbran to Mitchell (South Dakota) | 4,132.08 mi (6,649.94 km) |
| Cwmbran to Mitchellville (Maryland) | 3,532.70 mi (5,685.33 km) |
| Cwmbran to Moberly (Missouri) | 4,132.43 mi (6,650.50 km) |
| Cwmbran to Mobile (Alabama) | 4,389.33 mi (7,063.94 km) |
| Cwmbran to Modesto (California) | 5,224.61 mi (8,408.20 km) |
| Cwmbran to Mokena (Illinois) | 3,857.53 mi (6,208.10 km) |
| Cwmbran to Moline (Illinois) | 3,960.19 mi (6,373.31 km) |
| Cwmbran to Moncks Corner (South Carolina) | 3,931.72 mi (6,327.49 km) |
| Cwmbran to Monfort Heights (Ohio) | 3,837.31 mi (6,175.56 km) |
| Cwmbran to Monmouth (Oregon) | 4,879.46 mi (7,852.73 km) |
| Cwmbran to Monroe (Georgia) | 4,055.24 mi (6,526.28 km) |
| Cwmbran to Monroe (Louisiana) | 4,457.81 mi (7,174.16 km) |
| Cwmbran to Monroe (Michigan) | 3,665.01 mi (5,898.26 km) |
| Cwmbran to Monroe (North Carolina) | 3,867.45 mi (6,224.06 km) |
| Cwmbran to Monroe (Ohio) | 3,815.57 mi (6,140.56 km) |
