| Quarteira to Mauldin (South Carolina) | 4,042.91 mi (6,506.44 km) |
| Quarteira to Maumee (Ohio) | 3,918.58 mi (6,306.34 km) |
| Quarteira to Maumelle (Arkansas) | 4,548.04 mi (7,319.36 km) |
| Quarteira to Mayagüez (Puerto Rico) | 3,777.50 mi (6,079.31 km) |
| Quarteira to Mayfield Heights (Ohio) | 3,813.89 mi (6,137.87 km) |
| Quarteira to Mays Chapel (Maryland) | 3,629.92 mi (5,841.79 km) |
| Quarteira to Maywood (California) | 5,782.95 mi (9,306.76 km) |
| Quarteira to Maywood (Illinois) | 4,108.02 mi (6,611.22 km) |
| Quarteira to McAlester (Oklahoma) | 4,710.79 mi (7,581.28 km) |
| Quarteira to McAllen (Texas) | 5,158.40 mi (8,301.64 km) |
| Quarteira to McCalla (Alabama) | 4,330.42 mi (6,969.14 km) |
| Quarteira to McComb (Mississippi) | 4,575.27 mi (7,363.19 km) |
| Quarteira to McDonough (Georgia) | 4,178.85 mi (6,725.21 km) |
| Quarteira to McFarland (California) | 5,750.88 mi (9,255.15 km) |
| Quarteira to McHenry (Illinois) | 4,115.98 mi (6,624.03 km) |
