| Diamond Bar to Monticello (Minnesota) | 1,488.61 mi (2,395.68 km) |
| Diamond Bar to Montrose (Colorado) | 634.53 mi (1,021.18 km) |
| Diamond Bar to Moody (Alabama) | 1,791.40 mi (2,882.99 km) |
| Diamond Bar to Moore (Oklahoma) | 1,157.54 mi (1,862.88 km) |
| Diamond Bar to Moorestown-Lenola (New Jersey) | 2,377.58 mi (3,826.35 km) |
| Diamond Bar to Mooresville (North Carolina) | 2,089.36 mi (3,362.50 km) |
| Diamond Bar to Moorhead (Minnesota) | 1,412.82 mi (2,273.72 km) |
| Diamond Bar to Moorpark (California) | 63.81 mi (102.70 km) |
| Diamond Bar to Moraga (California) | 358.55 mi (577.04 km) |
| Diamond Bar to Moreno Valley (California) | 35.43 mi (57.02 km) |
| Diamond Bar to Morgan City (Louisiana) | 1,585.79 mi (2,552.08 km) |
| Diamond Bar to Morgan Hill (California) | 305.07 mi (490.96 km) |
| Diamond Bar to Morganton (North Carolina) | 2,039.32 mi (3,281.97 km) |
| Diamond Bar to Morgantown (West Virginia) | 2,114.49 mi (3,402.95 km) |
| Diamond Bar to Morris (Illinois) | 1,676.28 mi (2,697.72 km) |
