| Sintra to Marshall (Minnesota) | 4,264.78 mi (6,863.49 km) |
| Sintra to Marshall (Missouri) | 4,324.02 mi (6,958.84 km) |
| Sintra to Marshall (Texas) | 4,612.20 mi (7,422.61 km) |
| Sintra to Marshalltown (Iowa) | 4,214.31 mi (6,782.28 km) |
| Sintra to Marshfield (Wisconsin) | 4,010.65 mi (6,454.52 km) |
| Sintra to Martha Lake (Washington) | 5,171.08 mi (8,322.05 km) |
| Sintra to Martin (Tennessee) | 4,208.87 mi (6,773.53 km) |
| Sintra to Martinez (California) | 5,628.43 mi (9,058.08 km) |
| Sintra to Martinez (Georgia) | 3,964.25 mi (6,379.85 km) |
| Sintra to Martinsburg (West Virginia) | 3,581.75 mi (5,764.27 km) |
| Sintra to Martinsville (Indiana) | 3,993.75 mi (6,427.32 km) |
| Sintra to Martinsville (New Jersey) | 3,385.29 mi (5,448.10 km) |
| Sintra to Martinsville (Virginia) | 3,753.43 mi (6,040.57 km) |
| Sintra to Maryland City (Maryland) | 3,533.29 mi (5,686.28 km) |
| Sintra to Maryland Heights (Missouri) | 4,208.63 mi (6,773.13 km) |
