| Grayslake to Cadillac (Michigan) | 186.31 mi (299.84 km) |
| Grayslake to Caguas (Puerto Rico) | 2,106.99 mi (3,390.86 km) |
| Grayslake to Cahokia (Illinois) | 284.18 mi (457.34 km) |
| Grayslake to Calabasas (California) | 1,745.30 mi (2,808.78 km) |
| Grayslake to Caldwell (Idaho) | 1,442.29 mi (2,321.15 km) |
| Grayslake to Caledonia (Wisconsin) | 32.65 mi (52.55 km) |
| Grayslake to Calera (Alabama) | 640.56 mi (1,030.88 km) |
| Grayslake to Calexico (California) | 1,636.76 mi (2,634.11 km) |
| Grayslake to Calhoun (Georgia) | 567.53 mi (913.35 km) |
| Grayslake to California (Maryland) | 668.25 mi (1,075.45 km) |
| Grayslake to California City (California) | 1,672.82 mi (2,692.15 km) |
| Grayslake to Callaway (Florida) | 854.44 mi (1,375.08 km) |
| Grayslake to Calumet City (Illinois) | 56.04 mi (90.18 km) |
| Grayslake to Calverton (Maryland) | 622.79 mi (1,002.28 km) |
| Grayslake to Camano (Washington) | 1,707.30 mi (2,747.63 km) |
