| Thornton to Mauldin (South Carolina) | 3,956.64 mi (6,367.60 km) |
| Thornton to Maumee (Ohio) | 3,679.30 mi (5,921.25 km) |
| Thornton to Maumelle (Arkansas) | 4,342.00 mi (6,987.78 km) |
| Thornton to Mayagüez (Puerto Rico) | 4,206.52 mi (6,769.75 km) |
| Thornton to Mayfield Heights (Ohio) | 3,597.94 mi (5,790.33 km) |
| Thornton to Mays Chapel (Maryland) | 3,509.44 mi (5,647.89 km) |
| Thornton to Maywood (California) | 5,284.42 mi (8,504.45 km) |
| Thornton to Maywood (Illinois) | 3,820.46 mi (6,148.44 km) |
| Thornton to McAlester (Oklahoma) | 4,464.03 mi (7,184.16 km) |
| Thornton to McAllen (Texas) | 5,022.52 mi (8,082.96 km) |
| Thornton to McCalla (Alabama) | 4,216.10 mi (6,785.16 km) |
| Thornton to McComb (Mississippi) | 4,455.87 mi (7,171.03 km) |
| Thornton to McDonough (Georgia) | 4,096.63 mi (6,592.89 km) |
| Thornton to McFarland (California) | 5,218.86 mi (8,398.94 km) |
| Thornton to McHenry (Illinois) | 3,814.89 mi (6,139.46 km) |
