| Delaware to Chivasso | 4,371.87 mi (7,035.84 km) |
| Delaware to Ciampino | 4,697.74 mi (7,560.28 km) |
| Delaware to Cicciano | 4,812.73 mi (7,745.34 km) |
| Delaware to Cingoli | 4,661.47 mi (7,501.92 km) |
| Delaware to Cinisello Balsamo | 4,413.81 mi (7,103.33 km) |
| Delaware to Cinisi | 4,865.82 mi (7,830.78 km) |
| Delaware to Cirie | 4,358.34 mi (7,014.07 km) |
| Delaware to Ciro Marina | 4,988.54 mi (8,028.29 km) |
| Delaware to Cislago | 4,399.89 mi (7,080.94 km) |
| Delaware to Cisterna di Latina | 4,715.69 mi (7,589.16 km) |
| Delaware to Cisternino | 4,943.48 mi (7,955.76 km) |
| Delaware to Citta di Castello | 4,617.58 mi (7,431.27 km) |
| Delaware to Citta Sant'Angelo | 4,729.76 mi (7,611.81 km) |
| Delaware to Cittadella | 4,514.64 mi (7,265.62 km) |
| Delaware to Cittanova | 4,987.36 mi (8,026.38 km) |
