| Delaware to Carrollwood (Florida) | 845.43 mi (1,360.59 km) |
| Delaware to Carson (California) | 1,976.52 mi (3,180.90 km) |
| Delaware to Carson City (Nevada) | 1,936.66 mi (3,116.75 km) |
| Delaware to Carteret (New Jersey) | 465.46 mi (749.08 km) |
| Delaware to Cartersville (Georgia) | 433.41 mi (697.51 km) |
| Delaware to Carthage (Missouri) | 643.34 mi (1,035.36 km) |
| Delaware to Cary (Illinois) | 299.96 mi (482.74 km) |
| Delaware to Cary (North Carolina) | 387.73 mi (623.99 km) |
| Delaware to Casa de Oro-Mount Helix (California) | 1,939.33 mi (3,121.06 km) |
| Delaware to Casa Grande (Arizona) | 1,662.55 mi (2,675.62 km) |
| Delaware to Casas Adobes (Arizona) | 1,641.10 mi (2,641.09 km) |
| Delaware to Cascades (Virginia) | 314.27 mi (505.76 km) |
| Delaware to Casper (Wyoming) | 1,210.75 mi (1,948.51 km) |
| Delaware to Casselberry (Florida) | 809.18 mi (1,302.25 km) |
| Delaware to Castaic (California) | 1,979.05 mi (3,184.98 km) |
