| Delaware to Cibolo (Texas) | 1,130.24 mi (1,818.95 km) |
| Delaware to Cicero (Illinois) | 266.75 mi (429.29 km) |
| Delaware to Cimarron Hills (Colorado) | 1,153.06 mi (1,855.68 km) |
| Delaware to Cincinnati (Ohio) | 109.71 mi (176.57 km) |
| Delaware to Cinco Ranch (Texas) | 1,020.79 mi (1,642.81 km) |
| Delaware to Circleville (Ohio) | 47.49 mi (76.43 km) |
| Delaware to Citrus (California) | 1,949.63 mi (3,137.62 km) |
| Delaware to Citrus Heights (California) | 2,024.77 mi (3,258.55 km) |
| Delaware to Citrus Park (Florida) | 844.28 mi (1,358.73 km) |
| Delaware to Claiborne (Louisiana) | 736.67 mi (1,185.56 km) |
| Delaware to Claremont (California) | 1,940.20 mi (3,122.46 km) |
| Delaware to Claremont (New Hampshire) | 592.12 mi (952.92 km) |
| Delaware to Claremore (Oklahoma) | 732.13 mi (1,178.25 km) |
| Delaware to Clarksburg (Maryland) | 317.04 mi (510.22 km) |
| Delaware to Clarksburg (West Virginia) | 161.53 mi (259.96 km) |
