| Prospect Heights to Clarksdale (Mississippi) | 565.03 mi (909.33 km) |
| Prospect Heights to Clarkston (Georgia) | 606.94 mi (976.78 km) |
| Prospect Heights to Clarksville (Indiana) | 285.04 mi (458.72 km) |
| Prospect Heights to Clarksville (Tennessee) | 383.69 mi (617.48 km) |
| Prospect Heights to Clawson (Michigan) | 245.80 mi (395.58 km) |
| Prospect Heights to Clay (Alabama) | 585.39 mi (942.10 km) |
| Prospect Heights to Clayton (California) | 1,809.81 mi (2,912.60 km) |
| Prospect Heights to Clayton (Missouri) | 270.42 mi (435.19 km) |
| Prospect Heights to Clayton (North Carolina) | 676.06 mi (1,088.02 km) |
| Prospect Heights to Clayton (Ohio) | 242.97 mi (391.02 km) |
| Prospect Heights to Clearfield (Utah) | 1,242.77 mi (2,000.04 km) |
| Prospect Heights to Clearlake (California) | 1,822.84 mi (2,933.58 km) |
| Prospect Heights to Clearwater (Florida) | 1,018.19 mi (1,638.62 km) |
| Prospect Heights to Cleburne (Texas) | 850.87 mi (1,369.35 km) |
| Prospect Heights to Clemmons (North Carolina) | 582.31 mi (937.14 km) |
