| Cahokia to Centralia (Illinois) | 57.15 mi (91.97 km) |
| Cahokia to Centralia (Washington) | 1,744.45 mi (2,807.42 km) |
| Cahokia to Centreville (Virginia) | 686.68 mi (1,105.10 km) |
| Cahokia to Ceres (California) | 1,667.67 mi (2,683.86 km) |
| Cahokia to Cerritos (California) | 1,581.73 mi (2,545.55 km) |
| Cahokia to Chalco (Nebraska) | 363.79 mi (585.46 km) |
| Cahokia to Chalmette (Louisiana) | 595.79 mi (958.83 km) |
| Cahokia to Chambersburg (Pennsylvania) | 676.14 mi (1,088.15 km) |
| Cahokia to Chamblee (Georgia) | 460.18 mi (740.59 km) |
| Cahokia to Champaign (Illinois) | 147.73 mi (237.75 km) |
| Cahokia to Champlin (Minnesota) | 485.25 mi (780.94 km) |
| Cahokia to Chandler (Arizona) | 1,262.86 mi (2,032.38 km) |
| Cahokia to Chanhassen (Minnesota) | 468.17 mi (753.45 km) |
| Cahokia to Channahon (Illinois) | 221.93 mi (357.17 km) |
| Cahokia to Channelview (Texas) | 668.33 mi (1,075.57 km) |
