| Santarem to Mauldin (South Carolina) | 3,959.03 mi (6,371.44 km) |
| Santarem to Maumee (Ohio) | 3,817.98 mi (6,144.44 km) |
| Santarem to Maumelle (Arkansas) | 4,454.20 mi (7,168.34 km) |
| Santarem to Mayagüez (Puerto Rico) | 3,756.73 mi (6,045.87 km) |
| Santarem to Mayfield Heights (Ohio) | 3,715.00 mi (5,978.71 km) |
| Santarem to Mays Chapel (Maryland) | 3,539.67 mi (5,696.55 km) |
| Santarem to Maywood (California) | 5,665.63 mi (9,117.94 km) |
| Santarem to Maywood (Illinois) | 4,003.73 mi (6,443.38 km) |
| Santarem to McAlester (Oklahoma) | 4,613.55 mi (7,424.80 km) |
| Santarem to McAllen (Texas) | 5,075.01 mi (8,167.44 km) |
| Santarem to McCalla (Alabama) | 4,245.16 mi (6,831.93 km) |
| Santarem to McComb (Mississippi) | 4,490.79 mi (7,227.22 km) |
| Santarem to McDonough (Georgia) | 4,096.23 mi (6,592.25 km) |
| Santarem to McFarland (California) | 5,630.45 mi (9,061.34 km) |
| Santarem to McHenry (Illinois) | 4,010.43 mi (6,454.16 km) |
