| Prospect Heights to Cloverleaf (Texas) | 941.62 mi (1,515.38 km) |
| Prospect Heights to Cloverly (Maryland) | 608.93 mi (979.97 km) |
| Prospect Heights to Clovis (California) | 1,722.18 mi (2,771.58 km) |
| Prospect Heights to Clovis (New Mexico) | 980.71 mi (1,578.29 km) |
| Prospect Heights to Clute (Texas) | 995.40 mi (1,601.94 km) |
| Prospect Heights to Coachella (California) | 1,635.36 mi (2,631.85 km) |
| Prospect Heights to Coalinga (California) | 1,773.35 mi (2,853.93 km) |
| Prospect Heights to Coamo (Puerto Rico) | 2,088.86 mi (3,361.70 km) |
| Prospect Heights to Coatesville (Pennsylvania) | 647.04 mi (1,041.31 km) |
| Prospect Heights to Cockeysville (Maryland) | 617.58 mi (993.90 km) |
| Prospect Heights to Cocoa (Florida) | 1,029.59 mi (1,656.97 km) |
| Prospect Heights to Cocoa Beach (Florida) | 1,035.85 mi (1,667.04 km) |
| Prospect Heights to Coconut Creek (Florida) | 1,178.15 mi (1,896.05 km) |
| Prospect Heights to Coeur d'Alene (Idaho) | 1,455.30 mi (2,342.07 km) |
| Prospect Heights to Cohoes (New York) | 725.65 mi (1,167.82 km) |
