| Rio Grande City to Havelock (North Carolina) | 1,426.01 mi (2,294.94 km) |
| Rio Grande City to Haverhill (Massachusetts) | 1,927.73 mi (3,102.38 km) |
| Rio Grande City to Havre de Grace (Maryland) | 1,592.56 mi (2,562.98 km) |
| Rio Grande City to Hawaiian Gardens (California) | 1,257.83 mi (2,024.28 km) |
| Rio Grande City to Hawaiian Paradise Park (Hawaii) | 3,575.54 mi (5,754.28 km) |
| Rio Grande City to Hawthorne (California) | 1,274.63 mi (2,051.32 km) |
| Rio Grande City to Hawthorne (New Jersey) | 1,729.35 mi (2,783.12 km) |
| Rio Grande City to Hayden (Idaho) | 1,769.79 mi (2,848.20 km) |
| Rio Grande City to Hayesville (Oregon) | 1,854.18 mi (2,984.01 km) |
| Rio Grande City to Hays (Kansas) | 864.24 mi (1,390.86 km) |
| Rio Grande City to Haysville (Kansas) | 777.49 mi (1,251.24 km) |
| Rio Grande City to Hayward (California) | 1,562.25 mi (2,514.19 km) |
| Rio Grande City to Hazel Crest (Illinois) | 1,225.80 mi (1,972.74 km) |
| Rio Grande City to Hazel Dell (Washington) | 1,870.53 mi (3,010.34 km) |
| Rio Grande City to Hazel Park (Michigan) | 1,422.43 mi (2,289.17 km) |
