| Cahokia to Cloverly (Maryland) | 709.70 mi (1,142.15 km) |
| Cahokia to Clovis (California) | 1,610.53 mi (2,591.90 km) |
| Cahokia to Clovis (New Mexico) | 776.07 mi (1,248.97 km) |
| Cahokia to Clute (Texas) | 723.67 mi (1,164.63 km) |
| Cahokia to Coachella (California) | 1,482.22 mi (2,385.40 km) |
| Cahokia to Coalinga (California) | 1,656.64 mi (2,666.10 km) |
| Cahokia to Coamo (Puerto Rico) | 2,013.24 mi (3,239.99 km) |
| Cahokia to Coatesville (Pennsylvania) | 773.41 mi (1,244.68 km) |
| Cahokia to Cockeysville (Maryland) | 729.39 mi (1,173.83 km) |
| Cahokia to Cocoa (Florida) | 887.28 mi (1,427.94 km) |
| Cahokia to Cocoa Beach (Florida) | 894.98 mi (1,440.32 km) |
| Cahokia to Coconut Creek (Florida) | 1,028.17 mi (1,654.68 km) |
| Cahokia to Coeur d'Alene (Idaho) | 1,473.20 mi (2,370.89 km) |
| Cahokia to Cohoes (New York) | 909.07 mi (1,463.01 km) |
| Cahokia to Cold Springs (Nevada) | 1,591.67 mi (2,561.54 km) |
