| Grayslake to Carrollwood (Florida) | 1,034.25 mi (1,664.47 km) |
| Grayslake to Carson (California) | 1,734.33 mi (2,791.14 km) |
| Grayslake to Carson City (Nevada) | 1,664.87 mi (2,679.35 km) |
| Grayslake to Carteret (New Jersey) | 724.19 mi (1,165.47 km) |
| Grayslake to Cartersville (Georgia) | 591.39 mi (951.75 km) |
| Grayslake to Carthage (Missouri) | 489.83 mi (788.31 km) |
| Grayslake to Cary (Illinois) | 14.11 mi (22.71 km) |
| Grayslake to Cary (North Carolina) | 669.86 mi (1,078.04 km) |
| Grayslake to Casa de Oro-Mount Helix (California) | 1,706.92 mi (2,747.03 km) |
| Grayslake to Casa Grande (Arizona) | 1,446.15 mi (2,327.35 km) |
| Grayslake to Casas Adobes (Arizona) | 1,432.23 mi (2,304.96 km) |
| Grayslake to Cascades (Virginia) | 601.84 mi (968.57 km) |
| Grayslake to Casper (Wyoming) | 929.01 mi (1,495.10 km) |
| Grayslake to Casselberry (Florida) | 1,016.82 mi (1,636.41 km) |
| Grayslake to Castaic (California) | 1,732.35 mi (2,787.94 km) |
