| Sintra to Montevarchi | 1,134.56 mi (1,825.90 km) |
| Sintra to Monticello Conte Otto | 1,167.27 mi (1,878.54 km) |
| Sintra to Montichiari | 1,108.37 mi (1,783.74 km) |
| Sintra to Montignoso | 1,072.44 mi (1,725.92 km) |
| Sintra to Montopoli in Val d'Arno | 1,095.88 mi (1,763.65 km) |
| Sintra to Monza | 1,060.68 mi (1,707.00 km) |
| Sintra to Morbegno | 1,087.09 mi (1,749.50 km) |
| Sintra to Mori | 1,144.69 mi (1,842.20 km) |
| Sintra to Morlupo | 1,170.27 mi (1,883.37 km) |
| Sintra to Morrovalle | 1,232.48 mi (1,983.49 km) |
| Sintra to Mortara | 1,029.06 mi (1,656.11 km) |
| Sintra to Mosciano Sant'Angelo | 1,243.59 mi (2,001.37 km) |
| Sintra to Motta di Livenza | 1,218.26 mi (1,960.61 km) |
| Sintra to Motta Sant'Anastasia | 1,322.46 mi (2,128.29 km) |
| Sintra to Mottola | 1,404.65 mi (2,260.57 km) |
