| Rio Grande City to Mount Dora (Florida) | 1,064.76 mi (1,713.57 km) |
| Rio Grande City to Mount Holly (North Carolina) | 1,220.87 mi (1,964.80 km) |
| Rio Grande City to Mount Juliet (Tennessee) | 992.57 mi (1,597.38 km) |
| Rio Grande City to Mount Kisco (New York) | 1,757.02 mi (2,827.65 km) |
| Rio Grande City to Mount Pleasant (Michigan) | 1,426.24 mi (2,295.32 km) |
| Rio Grande City to Mount Pleasant (South Carolina) | 1,223.51 mi (1,969.04 km) |
| Rio Grande City to Mount Pleasant (Texas) | 521.98 mi (840.04 km) |
| Rio Grande City to Mount Pleasant (Wisconsin) | 1,286.00 mi (2,069.62 km) |
| Rio Grande City to Mount Prospect (Illinois) | 1,246.88 mi (2,006.65 km) |
| Rio Grande City to Mount Sinai (New York) | 1,781.67 mi (2,867.32 km) |
| Rio Grande City to Mount Vernon (Illinois) | 1,005.54 mi (1,618.27 km) |
| Rio Grande City to Mount Vernon (New York) | 1,743.15 mi (2,805.32 km) |
| Rio Grande City to Mount Vernon (Ohio) | 1,346.77 mi (2,167.41 km) |
| Rio Grande City to Mount Vernon (Virginia) | 1,518.76 mi (2,444.20 km) |
| Rio Grande City to Mount Vernon (Washington) | 1,978.78 mi (3,184.54 km) |
