| Idanha-a-Nova to Mauldin (South Carolina) | 4,014.76 mi (6,461.13 km) |
| Idanha-a-Nova to Maumee (Ohio) | 3,863.45 mi (6,217.62 km) |
| Idanha-a-Nova to Maumelle (Arkansas) | 4,503.70 mi (7,248.01 km) |
| Idanha-a-Nova to Mayagüez (Puerto Rico) | 3,837.81 mi (6,176.36 km) |
| Idanha-a-Nova to Mayfield Heights (Ohio) | 3,761.70 mi (6,053.87 km) |
| Idanha-a-Nova to Mays Chapel (Maryland) | 3,591.99 mi (5,780.75 km) |
| Idanha-a-Nova to Maywood (California) | 5,697.16 mi (9,168.70 km) |
| Idanha-a-Nova to Maywood (Illinois) | 4,046.49 mi (6,512.20 km) |
| Idanha-a-Nova to McAlester (Oklahoma) | 4,660.78 mi (7,500.80 km) |
| Idanha-a-Nova to McAllen (Texas) | 5,130.40 mi (8,256.58 km) |
| Idanha-a-Nova to McCalla (Alabama) | 4,299.94 mi (6,920.08 km) |
| Idanha-a-Nova to McComb (Mississippi) | 4,545.86 mi (7,315.85 km) |
| Idanha-a-Nova to McDonough (Georgia) | 4,152.57 mi (6,682.92 km) |
| Idanha-a-Nova to McFarland (California) | 5,659.25 mi (9,107.68 km) |
| Idanha-a-Nova to McHenry (Illinois) | 4,052.27 mi (6,521.49 km) |
