| Sintra to Marysville (California) | 5,552.93 mi (8,936.58 km) |
| Sintra to Marysville (Ohio) | 3,822.36 mi (6,151.49 km) |
| Sintra to Marysville (Washington) | 5,157.69 mi (8,300.51 km) |
| Sintra to Maryville (Missouri) | 4,359.84 mi (7,016.48 km) |
| Sintra to Maryville (Tennessee) | 3,987.73 mi (6,417.63 km) |
| Sintra to Mason (Ohio) | 3,893.06 mi (6,265.27 km) |
| Sintra to Mason City (Iowa) | 4,191.98 mi (6,746.34 km) |
| Sintra to Massapequa (New York) | 3,329.38 mi (5,358.12 km) |
| Sintra to Massapequa Park (New York) | 3,328.01 mi (5,355.92 km) |
| Sintra to Massillon (Ohio) | 3,718.70 mi (5,984.67 km) |
| Sintra to Mastic (New York) | 3,295.38 mi (5,303.40 km) |
| Sintra to Mastic Beach (New York) | 3,295.83 mi (5,304.13 km) |
| Sintra to Matteson (Illinois) | 3,992.85 mi (6,425.86 km) |
| Sintra to Matthews (North Carolina) | 3,843.25 mi (6,185.12 km) |
| Sintra to Mattoon (Illinois) | 4,083.96 mi (6,572.50 km) |
