| Sintra to Madison (New Jersey) | 3,373.79 mi (5,429.59 km) |
| Sintra to Madison (Wisconsin) | 4,022.00 mi (6,472.79 km) |
| Sintra to Madison Heights (Michigan) | 3,747.17 mi (6,030.48 km) |
| Sintra to Madison Heights (Virginia) | 3,693.25 mi (5,943.71 km) |
| Sintra to Madisonville (Kentucky) | 4,110.44 mi (6,615.12 km) |
| Sintra to Magalia (California) | 5,522.31 mi (8,887.30 km) |
| Sintra to Magna (Utah) | 5,100.56 mi (8,208.56 km) |
| Sintra to Magnolia (Arkansas) | 4,529.72 mi (7,289.88 km) |
| Sintra to Maili (Hawaii) | 7,811.82 mi (12,571.91 km) |
| Sintra to Maitland (Florida) | 4,091.43 mi (6,584.53 km) |
| Sintra to Makakilo (Hawaii) | 7,812.67 mi (12,573.28 km) |
| Sintra to Malden (Massachusetts) | 3,172.32 mi (5,105.36 km) |
| Sintra to Malibu (California) | 5,677.33 mi (9,136.79 km) |
| Sintra to Maltby (Washington) | 5,168.73 mi (8,318.27 km) |
| Sintra to Malvern (Arkansas) | 4,470.42 mi (7,194.45 km) |
