| Prospect Heights to Carrollwood (Florida) | 1,017.01 mi (1,636.72 km) |
| Prospect Heights to Carson (California) | 1,737.05 mi (2,795.52 km) |
| Prospect Heights to Carson City (Nevada) | 1,671.32 mi (2,689.73 km) |
| Prospect Heights to Carteret (New Jersey) | 717.47 mi (1,154.65 km) |
| Prospect Heights to Cartersville (Georgia) | 574.15 mi (924.01 km) |
| Prospect Heights to Carthage (Missouri) | 482.41 mi (776.36 km) |
| Prospect Heights to Cary (Illinois) | 18.16 mi (29.23 km) |
| Prospect Heights to Cary (North Carolina) | 655.29 mi (1,054.59 km) |
| Prospect Heights to Casa de Oro-Mount Helix (California) | 1,708.61 mi (2,749.74 km) |
| Prospect Heights to Casa Grande (Arizona) | 1,446.13 mi (2,327.32 km) |
| Prospect Heights to Casas Adobes (Arizona) | 1,431.52 mi (2,303.80 km) |
| Prospect Heights to Cascades (Virginia) | 591.57 mi (952.04 km) |
| Prospect Heights to Casper (Wyoming) | 936.94 mi (1,507.86 km) |
| Prospect Heights to Casselberry (Florida) | 999.65 mi (1,608.78 km) |
| Prospect Heights to Castaic (California) | 1,735.57 mi (2,793.13 km) |
