| Prospect Heights to Cullman (Alabama) | 550.82 mi (886.45 km) |
| Prospect Heights to Culpeper (Virginia) | 579.80 mi (933.10 km) |
| Prospect Heights to Culver City (California) | 1,738.74 mi (2,798.22 km) |
| Prospect Heights to Cumberland (Maryland) | 507.74 mi (817.13 km) |
| Prospect Heights to Cupertino (California) | 1,830.90 mi (2,946.54 km) |
| Prospect Heights to Cutler Bay (Florida) | 1,220.90 mi (1,964.85 km) |
| Prospect Heights to Cutlerville (Michigan) | 125.60 mi (202.13 km) |
| Prospect Heights to Cuyahoga Falls (Ohio) | 337.04 mi (542.41 km) |
| Prospect Heights to Cypress (California) | 1,726.72 mi (2,778.89 km) |
| Prospect Heights to Cypress Gardens (Florida) | 1,035.44 mi (1,666.38 km) |
| Prospect Heights to Cypress Lake (Florida) | 1,128.28 mi (1,815.79 km) |
| Prospect Heights to D'Iberville (Mississippi) | 805.58 mi (1,296.45 km) |
| Prospect Heights to Dakota Ridge (Colorado) | 913.77 mi (1,470.58 km) |
| Prospect Heights to Dale City (Virginia) | 605.43 mi (974.35 km) |
| Prospect Heights to Dallas (Georgia) | 590.07 mi (949.62 km) |
