| Rio Grande City to Montevarchi | 5,902.53 mi (9,499.21 km) |
| Rio Grande City to Monticello Conte Otto | 5,826.11 mi (9,376.22 km) |
| Rio Grande City to Montichiari | 5,783.96 mi (9,308.39 km) |
| Rio Grande City to Montignoso | 5,825.31 mi (9,374.93 km) |
| Rio Grande City to Montopoli in Val d'Arno | 5,862.76 mi (9,435.20 km) |
| Rio Grande City to Monza | 5,731.68 mi (9,224.24 km) |
| Rio Grande City to Morbegno | 5,724.22 mi (9,212.25 km) |
| Rio Grande City to Mori | 5,792.42 mi (9,322.00 km) |
| Rio Grande City to Morlupo | 5,994.33 mi (9,646.93 km) |
| Rio Grande City to Morrovalle | 5,995.03 mi (9,648.07 km) |
| Rio Grande City to Mortara | 5,721.64 mi (9,208.09 km) |
| Rio Grande City to Mosciano Sant'Angelo | 6,029.51 mi (9,703.56 km) |
| Rio Grande City to Motta di Livenza | 5,860.98 mi (9,432.34 km) |
| Rio Grande City to Motta Sant'Anastasia | 6,282.47 mi (10,110.67 km) |
| Rio Grande City to Mottola | 6,246.60 mi (10,052.94 km) |
