| Sintra to Medford (New York) | 3,301.90 mi (5,313.89 km) |
| Sintra to Medford (Oregon) | 5,451.12 mi (8,772.73 km) |
| Sintra to Medina (Ohio) | 3,725.63 mi (5,995.82 km) |
| Sintra to Medulla (Florida) | 4,147.29 mi (6,674.41 km) |
| Sintra to Mehlville (Missouri) | 4,208.12 mi (6,772.31 km) |
| Sintra to Melbourne (Florida) | 4,072.50 mi (6,554.06 km) |
| Sintra to Melissa (Texas) | 4,692.01 mi (7,551.06 km) |
| Sintra to Melrose (Massachusetts) | 3,171.88 mi (5,104.65 km) |
| Sintra to Melrose Park (Illinois) | 3,986.59 mi (6,415.80 km) |
| Sintra to Melville (New York) | 3,323.65 mi (5,348.89 km) |
| Sintra to Melvindale (Michigan) | 3,756.78 mi (6,045.96 km) |
| Sintra to Memphis (Florida) | 4,192.10 mi (6,746.53 km) |
| Sintra to Memphis (Tennessee) | 4,304.96 mi (6,928.16 km) |
| Sintra to Menasha (Wisconsin) | 3,945.33 mi (6,349.40 km) |
| Sintra to Mendota (California) | 5,617.15 mi (9,039.93 km) |
