| Delaware to Carmona | 4,030.43 mi (6,486.35 km) |
| Delaware to Cartagena | 4,246.95 mi (6,834.81 km) |
| Delaware to Cartama | 4,104.18 mi (6,605.04 km) |
| Delaware to Cartaya | 3,963.51 mi (6,378.65 km) |
| Delaware to Caspe | 4,165.25 mi (6,703.33 km) |
| Delaware to Cassa de la Selva | 4,273.12 mi (6,876.91 km) |
| Delaware to Castalla | 4,226.57 mi (6,802.01 km) |
| Delaware to Castellbisbal | 4,247.70 mi (6,836.01 km) |
| Delaware to Castelldefels | 4,254.28 mi (6,846.60 km) |
| Delaware to Castello de Ampurias | 4,269.13 mi (6,870.51 km) |
| Delaware to Castellon de la Plana | 4,207.97 mi (6,772.08 km) |
| Delaware to Castilleja de la Cuesta | 4,013.20 mi (6,458.62 km) |
| Delaware to Catarroja | 4,210.92 mi (6,776.82 km) |
| Delaware to Catral | 4,235.59 mi (6,816.53 km) |
| Delaware to Caudete | 4,208.03 mi (6,772.17 km) |
