| Civitavecchia to Castle Rock (Colorado) | 5,550.01 mi (8,931.87 km) |
| Civitavecchia to Castro Valley (California) | 6,205.27 mi (9,986.42 km) |
| Civitavecchia to Catalina Foothills (Arizona) | 6,140.66 mi (9,882.43 km) |
| Civitavecchia to Cataño (Puerto Rico) | 4,764.52 mi (7,667.76 km) |
| Civitavecchia to Cathedral City (California) | 6,251.52 mi (10,060.84 km) |
| Civitavecchia to Catonsville (Maryland) | 4,419.52 mi (7,112.53 km) |
| Civitavecchia to Cave Spring (Virginia) | 4,645.52 mi (7,476.25 km) |
| Civitavecchia to Cayce (South Carolina) | 4,828.84 mi (7,771.27 km) |
| Civitavecchia to Cayey (Puerto Rico) | 4,779.52 mi (7,691.89 km) |
| Civitavecchia to Cedar City (Utah) | 5,925.57 mi (9,536.28 km) |
| Civitavecchia to Cedar Falls (Iowa) | 4,935.37 mi (7,942.71 km) |
| Civitavecchia to Cedar Hill (Texas) | 5,582.43 mi (8,984.06 km) |
| Civitavecchia to Cedar Lake (Indiana) | 4,787.23 mi (7,704.31 km) |
| Civitavecchia to Cedar Mill (Oregon) | 5,767.95 mi (9,282.62 km) |
| Civitavecchia to Cedar Park (Texas) | 5,719.33 mi (9,204.38 km) |
