| Grayslake to Clemson (South Carolina) | 599.33 mi (964.53 km) |
| Grayslake to Clermont (Florida) | 1,017.30 mi (1,637.19 km) |
| Grayslake to Cleveland (Mississippi) | 611.70 mi (984.43 km) |
| Grayslake to Cleveland (Ohio) | 332.01 mi (534.33 km) |
| Grayslake to Cleveland (Tennessee) | 523.05 mi (841.77 km) |
| Grayslake to Cleveland Heights (Ohio) | 337.42 mi (543.02 km) |
| Grayslake to Cliffside Park (New Jersey) | 732.61 mi (1,179.02 km) |
| Grayslake to Clifton (Colorado) | 1,090.54 mi (1,755.05 km) |
| Grayslake to Clifton (New Jersey) | 723.34 mi (1,164.10 km) |
| Grayslake to Clinton (Iowa) | 118.27 mi (190.33 km) |
| Grayslake to Clinton (Maryland) | 634.09 mi (1,020.46 km) |
| Grayslake to Clinton (Mississippi) | 701.45 mi (1,128.88 km) |
| Grayslake to Clinton (Utah) | 1,237.62 mi (1,991.76 km) |
| Grayslake to Clive (Iowa) | 300.23 mi (483.17 km) |
| Grayslake to Cloquet (Minnesota) | 373.86 mi (601.67 km) |
