| Caldicot to Monticello (Minnesota) | 3,917.89 mi (6,305.23 km) |
| Caldicot to Montrose (Colorado) | 4,757.66 mi (7,656.72 km) |
| Caldicot to Moody (Alabama) | 4,191.24 mi (6,745.15 km) |
| Caldicot to Moore (Oklahoma) | 4,540.06 mi (7,306.52 km) |
| Caldicot to Moorestown-Lenola (New Jersey) | 3,423.66 mi (5,509.84 km) |
| Caldicot to Mooresville (North Carolina) | 3,863.65 mi (6,217.95 km) |
| Caldicot to Moorhead (Minnesota) | 3,949.63 mi (6,356.32 km) |
| Caldicot to Moorpark (California) | 5,359.07 mi (8,624.59 km) |
| Caldicot to Moraga (California) | 5,258.51 mi (8,462.75 km) |
| Caldicot to Moreno Valley (California) | 5,324.42 mi (8,568.82 km) |
| Caldicot to Morgan City (Louisiana) | 4,576.54 mi (7,365.23 km) |
| Caldicot to Morgan Hill (California) | 5,284.56 mi (8,504.68 km) |
| Caldicot to Morganton (North Carolina) | 3,892.28 mi (6,264.02 km) |
| Caldicot to Morgantown (West Virginia) | 3,641.63 mi (5,860.64 km) |
| Caldicot to Morris (Illinois) | 3,898.48 mi (6,273.99 km) |
