| Delaware to Clarksdale (Mississippi) | 588.74 mi (947.48 km) |
| Delaware to Clarkston (Georgia) | 451.86 mi (727.19 km) |
| Delaware to Clarksville (Indiana) | 197.80 mi (318.32 km) |
| Delaware to Clarksville (Tennessee) | 345.26 mi (555.64 km) |
| Delaware to Clawson (Michigan) | 155.62 mi (250.45 km) |
| Delaware to Clay (Alabama) | 495.24 mi (797.01 km) |
| Delaware to Clayton (California) | 2,072.67 mi (3,335.65 km) |
| Delaware to Clayton (Missouri) | 403.17 mi (648.85 km) |
| Delaware to Clayton (North Carolina) | 406.81 mi (654.70 km) |
| Delaware to Clayton (Ohio) | 72.32 mi (116.38 km) |
| Delaware to Clearfield (Utah) | 1,510.64 mi (2,431.15 km) |
| Delaware to Clearlake (California) | 2,089.75 mi (3,363.13 km) |
| Delaware to Clearwater (Florida) | 850.45 mi (1,368.67 km) |
| Delaware to Cleburne (Texas) | 966.23 mi (1,555.00 km) |
| Delaware to Clemmons (North Carolina) | 328.11 mi (528.04 km) |
