| Grayslake to Cloverleaf (Texas) | 953.63 mi (1,534.72 km) |
| Grayslake to Cloverly (Maryland) | 618.91 mi (996.04 km) |
| Grayslake to Clovis (California) | 1,717.24 mi (2,763.62 km) |
| Grayslake to Clovis (New Mexico) | 983.60 mi (1,582.95 km) |
| Grayslake to Clute (Texas) | 1,007.52 mi (1,621.44 km) |
| Grayslake to Coachella (California) | 1,633.34 mi (2,628.61 km) |
| Grayslake to Coalinga (California) | 1,768.70 mi (2,846.44 km) |
| Grayslake to Coamo (Puerto Rico) | 2,104.44 mi (3,386.77 km) |
| Grayslake to Coatesville (Pennsylvania) | 655.19 mi (1,054.42 km) |
| Grayslake to Cockeysville (Maryland) | 626.83 mi (1,008.79 km) |
| Grayslake to Cocoa (Florida) | 1,046.72 mi (1,684.53 km) |
| Grayslake to Cocoa Beach (Florida) | 1,052.96 mi (1,694.58 km) |
| Grayslake to Coconut Creek (Florida) | 1,195.30 mi (1,923.66 km) |
| Grayslake to Coeur d'Alene (Idaho) | 1,443.41 mi (2,322.95 km) |
| Grayslake to Cohoes (New York) | 728.86 mi (1,172.98 km) |
