| Witham to Mauldin (South Carolina) | 4,096.46 mi (6,592.62 km) |
| Witham to Maumee (Ohio) | 3,830.05 mi (6,163.87 km) |
| Witham to Maumelle (Arkansas) | 4,492.97 mi (7,230.73 km) |
| Witham to Mayagüez (Puerto Rico) | 4,291.96 mi (6,907.25 km) |
| Witham to Mayfield Heights (Ohio) | 3,746.57 mi (6,029.52 km) |
| Witham to Mays Chapel (Maryland) | 3,649.83 mi (5,873.83 km) |
| Witham to Maywood (California) | 5,453.27 mi (8,776.19 km) |
| Witham to Maywood (Illinois) | 3,975.21 mi (6,397.48 km) |
| Witham to McAlester (Oklahoma) | 4,618.26 mi (7,432.37 km) |
| Witham to McAllen (Texas) | 5,170.67 mi (8,321.38 km) |
| Witham to McCalla (Alabama) | 4,359.48 mi (7,015.91 km) |
| Witham to McComb (Mississippi) | 4,600.66 mi (7,404.05 km) |
| Witham to McDonough (Georgia) | 4,236.78 mi (6,818.44 km) |
| Witham to McFarland (California) | 5,388.66 mi (8,672.21 km) |
| Witham to McHenry (Illinois) | 3,970.51 mi (6,389.92 km) |
