| Grayslake to Crawfordsville (Indiana) | 169.39 mi (272.60 km) |
| Grayslake to Crest Hill (Illinois) | 53.23 mi (85.67 km) |
| Grayslake to Crestview (Florida) | 805.01 mi (1,295.54 km) |
| Grayslake to Crestwood (Illinois) | 50.35 mi (81.02 km) |
| Grayslake to Crestwood (Missouri) | 289.00 mi (465.09 km) |
| Grayslake to Creve Coeur (Missouri) | 283.90 mi (456.89 km) |
| Grayslake to Crofton (Maryland) | 637.14 mi (1,025.38 km) |
| Grayslake to Crossville (Tennessee) | 469.72 mi (755.93 km) |
| Grayslake to Crowley (Louisiana) | 871.49 mi (1,402.53 km) |
| Grayslake to Crowley (Texas) | 845.31 mi (1,360.40 km) |
| Grayslake to Crown Point (Indiana) | 73.13 mi (117.69 km) |
| Grayslake to Crystal (Minnesota) | 324.75 mi (522.64 km) |
| Grayslake to Crystal Lake (Illinois) | 17.09 mi (27.50 km) |
| Grayslake to Cudahy (California) | 1,726.50 mi (2,778.54 km) |
| Grayslake to Cudahy (Wisconsin) | 42.76 mi (68.82 km) |
