| Round Lake Beach to Central Point (Oregon) | 1,765.07 mi (2,840.61 km) |
| Round Lake Beach to Centralia (Illinois) | 272.04 mi (437.81 km) |
| Round Lake Beach to Centralia (Washington) | 1,729.18 mi (2,782.85 km) |
| Round Lake Beach to Centreville (Virginia) | 608.88 mi (979.90 km) |
| Round Lake Beach to Ceres (California) | 1,760.35 mi (2,833.01 km) |
| Round Lake Beach to Cerritos (California) | 1,721.98 mi (2,771.26 km) |
| Round Lake Beach to Chalco (Nebraska) | 422.97 mi (680.70 km) |
| Round Lake Beach to Chalmette (Louisiana) | 865.54 mi (1,392.95 km) |
| Round Lake Beach to Chambersburg (Pennsylvania) | 567.67 mi (913.58 km) |
| Round Lake Beach to Chamblee (Georgia) | 621.68 mi (1,000.50 km) |
| Round Lake Beach to Champaign (Illinois) | 156.81 mi (252.36 km) |
| Round Lake Beach to Champlin (Minnesota) | 327.53 mi (527.10 km) |
| Round Lake Beach to Chandler (Arizona) | 1,434.78 mi (2,309.06 km) |
| Round Lake Beach to Chanhassen (Minnesota) | 323.04 mi (519.87 km) |
| Round Lake Beach to Channahon (Illinois) | 66.83 mi (107.56 km) |
