| Delaware to Castrovillari | 4,930.56 mi (7,934.97 km) |
| Delaware to Catania | 4,980.31 mi (8,015.03 km) |
| Delaware to Catanzaro | 4,986.14 mi (8,024.41 km) |
| Delaware to Cattolica | 4,618.05 mi (7,432.03 km) |
| Delaware to Cava de' Tirreni | 4,830.67 mi (7,774.21 km) |
| Delaware to Cavallino | 4,992.93 mi (8,035.34 km) |
| Delaware to Cavarzere | 4,546.25 mi (7,316.48 km) |
| Delaware to Cave | 4,711.11 mi (7,581.80 km) |
| Delaware to Cavriago | 4,499.47 mi (7,241.20 km) |
| Delaware to Cavriglia | 4,583.83 mi (7,376.97 km) |
| Delaware to Cazzago San Martino | 4,445.79 mi (7,154.81 km) |
| Delaware to Ceccano | 4,737.94 mi (7,624.98 km) |
| Delaware to Cecina | 4,551.12 mi (7,324.33 km) |
| Delaware to Cefalu | 4,911.32 mi (7,904.01 km) |
| Delaware to Ceglie Messapico | 4,949.76 mi (7,965.88 km) |
