| Estoril to Mauldin (South Carolina) | 3,936.05 mi (6,334.46 km) |
| Estoril to Maumee (Ohio) | 3,801.79 mi (6,118.38 km) |
| Estoril to Maumelle (Arkansas) | 4,435.22 mi (7,137.79 km) |
| Estoril to Mayagüez (Puerto Rico) | 3,715.33 mi (5,979.24 km) |
| Estoril to Mayfield Heights (Ohio) | 3,698.04 mi (5,951.43 km) |
| Estoril to Mays Chapel (Maryland) | 3,519.08 mi (5,663.42 km) |
| Estoril to Maywood (California) | 5,657.75 mi (9,105.26 km) |
| Estoril to Maywood (Illinois) | 3,989.23 mi (6,420.05 km) |
| Estoril to McAlester (Oklahoma) | 4,596.01 mi (7,396.57 km) |
| Estoril to McAllen (Texas) | 5,052.01 mi (8,130.43 km) |
| Estoril to McCalla (Alabama) | 4,222.75 mi (6,795.86 km) |
| Estoril to McComb (Mississippi) | 4,468.12 mi (7,190.74 km) |
| Estoril to McDonough (Georgia) | 4,072.80 mi (6,554.54 km) |
| Estoril to McFarland (California) | 5,624.27 mi (9,051.39 km) |
| Estoril to McHenry (Illinois) | 3,996.51 mi (6,431.77 km) |
