| Round Lake Beach to Camarillo (California) | 1,758.87 mi (2,830.63 km) |
| Round Lake Beach to Camas (Washington) | 1,708.67 mi (2,749.84 km) |
| Round Lake Beach to Cambridge (Maryland) | 683.31 mi (1,099.68 km) |
| Round Lake Beach to Cambridge (Massachusetts) | 864.34 mi (1,391.02 km) |
| Round Lake Beach to Camden (Arkansas) | 661.57 mi (1,064.69 km) |
| Round Lake Beach to Camden (New Jersey) | 694.92 mi (1,118.37 km) |
| Round Lake Beach to Cameron Park (California) | 1,735.98 mi (2,793.79 km) |
| Round Lake Beach to Camp Pendleton South (California) | 1,709.74 mi (2,751.57 km) |
| Round Lake Beach to Camp Springs (Maryland) | 634.88 mi (1,021.75 km) |
| Round Lake Beach to Camp Verde (Arizona) | 1,388.67 mi (2,234.85 km) |
| Round Lake Beach to Campbell (California) | 1,818.96 mi (2,927.33 km) |
| Round Lake Beach to Campbellsville (Kentucky) | 376.73 mi (606.29 km) |
| Round Lake Beach to Campton Hills (Illinois) | 34.28 mi (55.17 km) |
| Round Lake Beach to Canby (Oregon) | 1,723.20 mi (2,773.23 km) |
| Round Lake Beach to Candelaria (Puerto Rico) | 2,094.21 mi (3,370.30 km) |
