| Rio Grande City to Channelview (Texas) | 326.44 mi (525.35 km) |
| Rio Grande City to Chantilly (Virginia) | 1,508.19 mi (2,427.20 km) |
| Rio Grande City to Chaparral (New Mexico) | 601.60 mi (968.18 km) |
| Rio Grande City to Chapel Hill (North Carolina) | 1,339.01 mi (2,154.93 km) |
| Rio Grande City to Charleston (Illinois) | 1,093.87 mi (1,760.41 km) |
| Rio Grande City to Charleston (South Carolina) | 1,214.52 mi (1,954.59 km) |
| Rio Grande City to Charleston (West Virginia) | 1,296.08 mi (2,085.83 km) |
| Rio Grande City to Charlotte (North Carolina) | 1,226.82 mi (1,974.37 km) |
| Rio Grande City to Charlottesville (Virginia) | 1,430.76 mi (2,302.58 km) |
| Rio Grande City to Chaska (Minnesota) | 1,306.27 mi (2,102.24 km) |
| Rio Grande City to Chatham (Illinois) | 1,058.34 mi (1,703.23 km) |
| Rio Grande City to Chattanooga (Tennessee) | 1,003.35 mi (1,614.73 km) |
| Rio Grande City to Cheat Lake (West Virginia) | 1,426.24 mi (2,295.31 km) |
| Rio Grande City to Chelsea (Alabama) | 873.05 mi (1,405.04 km) |
| Rio Grande City to Chelsea (Massachusetts) | 1,918.19 mi (3,087.03 km) |
