| Rio Grande City to Central Point (Oregon) | 1,752.11 mi (2,819.74 km) |
| Rio Grande City to Centralia (Illinois) | 1,010.26 mi (1,625.85 km) |
| Rio Grande City to Centralia (Washington) | 1,926.61 mi (3,100.59 km) |
| Rio Grande City to Centreville (Virginia) | 1,506.91 mi (2,425.14 km) |
| Rio Grande City to Ceres (California) | 1,505.39 mi (2,422.68 km) |
| Rio Grande City to Cerritos (California) | 1,258.45 mi (2,025.28 km) |
| Rio Grande City to Chalco (Nebraska) | 1,034.06 mi (1,664.16 km) |
| Rio Grande City to Chalmette (Louisiana) | 592.68 mi (953.83 km) |
| Rio Grande City to Chambersburg (Pennsylvania) | 1,534.40 mi (2,469.38 km) |
| Rio Grande City to Chamblee (Georgia) | 1,009.21 mi (1,624.17 km) |
| Rio Grande City to Champaign (Illinois) | 1,125.81 mi (1,811.82 km) |
| Rio Grande City to Champlin (Minnesota) | 1,332.63 mi (2,144.66 km) |
| Rio Grande City to Chandler (Arizona) | 913.90 mi (1,470.78 km) |
| Rio Grande City to Chanhassen (Minnesota) | 1,309.41 mi (2,107.29 km) |
| Rio Grande City to Channahon (Illinois) | 1,200.60 mi (1,932.18 km) |
