| Rio Grande City to Mancha Real | 5,389.02 mi (8,672.80 km) |
| Rio Grande City to Manilva | 5,345.79 mi (8,603.22 km) |
| Rio Grande City to Manises | 5,494.41 mi (8,842.40 km) |
| Rio Grande City to Manlleu | 5,545.79 mi (8,925.09 km) |
| Rio Grande City to Manresa | 5,533.43 mi (8,905.19 km) |
| Rio Grande City to Manzanares | 5,366.65 mi (8,636.79 km) |
| Rio Grande City to Manzanares el Real | 5,294.75 mi (8,521.07 km) |
| Rio Grande City to Maracena | 5,404.63 mi (8,697.91 km) |
| Rio Grande City to Marbella | 5,360.75 mi (8,627.29 km) |
| Rio Grande City to Marchena | 5,311.20 mi (8,547.54 km) |
| Rio Grande City to Marin | 5,019.77 mi (8,078.53 km) |
| Rio Grande City to Marratxi | 5,642.06 mi (9,080.02 km) |
| Rio Grande City to Martorell | 5,545.92 mi (8,925.30 km) |
| Rio Grande City to Martos | 5,373.33 mi (8,647.54 km) |
| Rio Grande City to Masamagrell | 5,497.57 mi (8,847.48 km) |
