| South Plainfield to Mattoon (Illinois) | 741.02 mi (1,192.55 km) |
| South Plainfield to Mauldin (South Carolina) | 587.96 mi (946.23 km) |
| South Plainfield to Maumee (Ohio) | 486.37 mi (782.73 km) |
| South Plainfield to Maumelle (Arkansas) | 1,057.09 mi (1,701.22 km) |
| South Plainfield to Mayagüez (Puerto Rico) | 1,605.27 mi (2,583.43 km) |
| South Plainfield to Mayfield Heights (Ohio) | 372.38 mi (599.29 km) |
| South Plainfield to Mays Chapel (Maryland) | 142.19 mi (228.83 km) |
| South Plainfield to Maywood (California) | 2,423.60 mi (3,900.41 km) |
| South Plainfield to Maywood (Illinois) | 702.90 mi (1,131.21 km) |
| South Plainfield to McAlester (Oklahoma) | 1,226.70 mi (1,974.18 km) |
| South Plainfield to McAllen (Texas) | 1,685.66 mi (2,712.81 km) |
| South Plainfield to McCalla (Alabama) | 857.53 mi (1,380.06 km) |
| South Plainfield to McComb (Mississippi) | 1,102.98 mi (1,775.08 km) |
| South Plainfield to McDonough (Georgia) | 728.22 mi (1,171.95 km) |
| South Plainfield to McFarland (California) | 2,433.36 mi (3,916.11 km) |
