| Rio Grande City to Mineola (New York) | 1,746.73 mi (2,811.10 km) |
| Rio Grande City to Mineral Wells (Texas) | 446.93 mi (719.26 km) |
| Rio Grande City to Minneapolis (Minnesota) | 1,320.40 mi (2,124.98 km) |
| Rio Grande City to Minnehaha (Washington) | 1,868.27 mi (3,006.70 km) |
| Rio Grande City to Minneola (Florida) | 1,057.69 mi (1,702.19 km) |
| Rio Grande City to Minnetonka (Minnesota) | 1,315.87 mi (2,117.69 km) |
| Rio Grande City to Minooka (Illinois) | 1,201.77 mi (1,934.06 km) |
| Rio Grande City to Minot (North Dakota) | 1,515.97 mi (2,439.72 km) |
| Rio Grande City to Mint Hill (North Carolina) | 1,235.06 mi (1,987.63 km) |
| Rio Grande City to Miramar (Florida) | 1,145.62 mi (1,843.70 km) |
| Rio Grande City to Mishawaka (Indiana) | 1,278.12 mi (2,056.93 km) |
| Rio Grande City to Mission (Texas) | 33.06 mi (53.21 km) |
| Rio Grande City to Mission Bend (Texas) | 299.07 mi (481.31 km) |
| Rio Grande City to Mission Viejo (California) | 1,230.17 mi (1,979.77 km) |
| Rio Grande City to Missoula (Montana) | 1,641.24 mi (2,641.32 km) |
