| Rio Grande City to Hillcrest Heights (Maryland) | 1,529.40 mi (2,461.33 km) |
| Rio Grande City to Hilliard (Ohio) | 1,303.68 mi (2,098.07 km) |
| Rio Grande City to Hillsboro (Oregon) | 1,875.04 mi (3,017.59 km) |
| Rio Grande City to Hillsborough (California) | 1,574.45 mi (2,533.84 km) |
| Rio Grande City to Hillsborough (New Jersey) | 1,691.92 mi (2,722.89 km) |
| Rio Grande City to Hilo (Hawaii) | 3,580.42 mi (5,762.13 km) |
| Rio Grande City to Hilton Head Island (South Carolina) | 1,158.77 mi (1,864.87 km) |
| Rio Grande City to Hinesville (Georgia) | 1,103.25 mi (1,775.51 km) |
| Rio Grande City to Hinsdale (Illinois) | 1,231.96 mi (1,982.65 km) |
| Rio Grande City to Hobart (Indiana) | 1,234.88 mi (1,987.35 km) |
| Rio Grande City to Hobbs (New Mexico) | 510.08 mi (820.89 km) |
| Rio Grande City to Hobe Sound (Florida) | 1,152.65 mi (1,855.01 km) |
| Rio Grande City to Hoboken (New Jersey) | 1,728.56 mi (2,781.85 km) |
| Rio Grande City to Hockessin (Delaware) | 1,620.54 mi (2,608.00 km) |
| Rio Grande City to Hoffman Estates (Illinois) | 1,241.05 mi (1,997.28 km) |
