| Grayslake to Cold Springs (Nevada) | 1,665.45 mi (2,680.28 km) |
| Grayslake to Coldwater (Michigan) | 157.84 mi (254.01 km) |
| Grayslake to Colesville (Maryland) | 619.81 mi (997.48 km) |
| Grayslake to College (Alaska) | 2,753.28 mi (4,430.98 km) |
| Grayslake to College Park (Georgia) | 631.87 mi (1,016.90 km) |
| Grayslake to College Park (Maryland) | 625.33 mi (1,006.38 km) |
| Grayslake to College Station (Texas) | 931.87 mi (1,499.70 km) |
| Grayslake to Collegedale (Tennessee) | 528.55 mi (850.62 km) |
| Grayslake to Colleyville (Texas) | 820.57 mi (1,320.58 km) |
| Grayslake to Collierville (Tennessee) | 511.84 mi (823.72 km) |
| Grayslake to Collinsville (Illinois) | 273.49 mi (440.14 km) |
| Grayslake to Colonia (New Jersey) | 719.66 mi (1,158.18 km) |
| Grayslake to Colonial Heights (Virginia) | 663.89 mi (1,068.43 km) |
| Grayslake to Colonial Park (Pennsylvania) | 598.93 mi (963.88 km) |
| Grayslake to Colorado Springs (Colorado) | 907.97 mi (1,461.23 km) |
