| Round Lake Beach to Clemson (South Carolina) | 602.85 mi (970.19 km) |
| Round Lake Beach to Clermont (Florida) | 1,020.69 mi (1,642.64 km) |
| Round Lake Beach to Cleveland (Mississippi) | 613.67 mi (987.61 km) |
| Round Lake Beach to Cleveland (Ohio) | 334.79 mi (538.80 km) |
| Round Lake Beach to Cleveland (Tennessee) | 526.39 mi (847.14 km) |
| Round Lake Beach to Cleveland Heights (Ohio) | 340.17 mi (547.45 km) |
| Round Lake Beach to Cliffside Park (New Jersey) | 735.18 mi (1,183.16 km) |
| Round Lake Beach to Clifton (Colorado) | 1,088.37 mi (1,751.57 km) |
| Round Lake Beach to Clifton (New Jersey) | 725.91 mi (1,168.24 km) |
| Round Lake Beach to Clinton (Iowa) | 116.74 mi (187.87 km) |
| Round Lake Beach to Clinton (Maryland) | 637.25 mi (1,025.55 km) |
| Round Lake Beach to Clinton (Mississippi) | 703.61 mi (1,132.35 km) |
| Round Lake Beach to Clinton (Utah) | 1,235.02 mi (1,987.57 km) |
| Round Lake Beach to Clive (Iowa) | 298.21 mi (479.92 km) |
| Round Lake Beach to Cloquet (Minnesota) | 370.30 mi (595.93 km) |
