| South El Monte to Mattoon (Illinois) | 1,677.30 mi (2,699.35 km) |
| South El Monte to Mauldin (South Carolina) | 2,027.22 mi (3,262.50 km) |
| South El Monte to Maumee (Ohio) | 1,933.48 mi (3,111.63 km) |
| South El Monte to Maumelle (Arkansas) | 1,458.39 mi (2,347.06 km) |
| South El Monte to Mayagüez (Puerto Rico) | 3,305.46 mi (5,319.63 km) |
| South El Monte to Mayfield Heights (Ohio) | 2,047.36 mi (3,294.91 km) |
| South El Monte to Mays Chapel (Maryland) | 2,301.60 mi (3,704.07 km) |
| South El Monte to Maywood (California) | 9.01 mi (14.50 km) |
| South El Monte to Maywood (Illinois) | 1,721.55 mi (2,770.57 km) |
| South El Monte to McAlester (Oklahoma) | 1,267.40 mi (2,039.68 km) |
| South El Monte to McAllen (Texas) | 1,297.82 mi (2,088.64 km) |
| South El Monte to McCalla (Alabama) | 1,777.40 mi (2,860.44 km) |
| South El Monte to McComb (Mississippi) | 1,611.11 mi (2,592.83 km) |
| South El Monte to McDonough (Georgia) | 1,938.99 mi (3,120.51 km) |
| South El Monte to McFarland (California) | 131.29 mi (211.30 km) |
