| Delaware to Cadillac (Michigan) | 298.90 mi (481.04 km) |
| Delaware to Caguas (Puerto Rico) | 1,829.98 mi (2,945.07 km) |
| Delaware to Cahokia (Illinois) | 397.27 mi (639.34 km) |
| Delaware to Calabasas (California) | 1,990.14 mi (3,202.83 km) |
| Delaware to Caldwell (Idaho) | 1,729.00 mi (2,782.55 km) |
| Delaware to Caledonia (Wisconsin) | 302.96 mi (487.56 km) |
| Delaware to Calera (Alabama) | 534.71 mi (860.53 km) |
| Delaware to Calexico (California) | 1,864.31 mi (3,000.32 km) |
| Delaware to Calhoun (Georgia) | 413.18 mi (664.95 km) |
| Delaware to California (Maryland) | 377.56 mi (607.63 km) |
| Delaware to California City (California) | 1,921.76 mi (3,092.78 km) |
| Delaware to Callaway (Florida) | 715.09 mi (1,150.82 km) |
| Delaware to Calumet City (Illinois) | 250.95 mi (403.86 km) |
| Delaware to Calverton (Maryland) | 336.53 mi (541.60 km) |
| Delaware to Camano (Washington) | 2,001.09 mi (3,220.45 km) |
