| Costa Mesa to Monticello (Minnesota) | 1,507.43 mi (2,425.97 km) |
| Costa Mesa to Montrose (Colorado) | 651.66 mi (1,048.74 km) |
| Costa Mesa to Moody (Alabama) | 1,800.27 mi (2,897.26 km) |
| Costa Mesa to Moore (Oklahoma) | 1,167.36 mi (1,878.69 km) |
| Costa Mesa to Moorestown-Lenola (New Jersey) | 2,391.69 mi (3,849.05 km) |
| Costa Mesa to Mooresville (North Carolina) | 2,100.33 mi (3,380.16 km) |
| Costa Mesa to Moorhead (Minnesota) | 1,433.14 mi (2,306.41 km) |
| Costa Mesa to Moorpark (California) | 69.84 mi (112.40 km) |
| Costa Mesa to Moraga (California) | 372.73 mi (599.84 km) |
| Costa Mesa to Moreno Valley (California) | 44.43 mi (71.51 km) |
| Costa Mesa to Morgan City (Louisiana) | 1,590.16 mi (2,559.12 km) |
| Costa Mesa to Morgan Hill (California) | 318.43 mi (512.46 km) |
| Costa Mesa to Morganton (North Carolina) | 2,050.34 mi (3,299.71 km) |
| Costa Mesa to Morgantown (West Virginia) | 2,128.30 mi (3,425.17 km) |
| Costa Mesa to Morris (Illinois) | 1,691.59 mi (2,722.35 km) |
