| Darby to Castle Pines (Colorado) | 1,567.30 mi (2,522.33 km) |
| Darby to Castle Rock (Colorado) | 1,567.52 mi (2,522.68 km) |
| Darby to Castro Valley (California) | 2,495.25 mi (4,015.71 km) |
| Darby to Catalina Foothills (Arizona) | 2,042.11 mi (3,286.47 km) |
| Darby to Cataño (Puerto Rico) | 1,580.75 mi (2,543.97 km) |
| Darby to Cathedral City (California) | 2,294.93 mi (3,693.33 km) |
| Darby to Catonsville (Maryland) | 90.98 mi (146.42 km) |
| Darby to Cave Spring (Virginia) | 316.81 mi (509.86 km) |
| Darby to Cayce (South Carolina) | 521.66 mi (839.52 km) |
| Darby to Cayey (Puerto Rico) | 1,601.54 mi (2,577.44 km) |
| Darby to Cedar City (Utah) | 2,027.84 mi (3,263.50 km) |
| Darby to Cedar Falls (Iowa) | 909.69 mi (1,464.00 km) |
| Darby to Cedar Hill (Texas) | 1,306.71 mi (2,102.95 km) |
| Darby to Cedar Lake (Indiana) | 645.67 mi (1,039.10 km) |
| Darby to Cedar Mill (Oregon) | 2,407.89 mi (3,875.12 km) |
