| Clemson to Chivasso | 4,603.81 mi (7,409.11 km) |
| Clemson to Ciampino | 4,922.79 mi (7,922.46 km) |
| Clemson to Cicciano | 5,038.35 mi (8,108.44 km) |
| Clemson to Cingoli | 4,895.63 mi (7,878.75 km) |
| Clemson to Cinisello Balsamo | 4,650.30 mi (7,483.94 km) |
| Clemson to Cinisi | 5,074.10 mi (8,165.97 km) |
| Clemson to Cirie | 4,589.93 mi (7,386.78 km) |
| Clemson to Ciro Marina | 5,213.11 mi (8,389.68 km) |
| Clemson to Cislago | 4,636.40 mi (7,461.56 km) |
| Clemson to Cisterna di Latina | 4,940.24 mi (7,950.56 km) |
| Clemson to Cisternino | 5,175.14 mi (8,328.58 km) |
| Clemson to Citta di Castello | 4,850.01 mi (7,805.34 km) |
| Clemson to Citta Sant'Angelo | 4,961.70 mi (7,985.08 km) |
| Clemson to Cittadella | 4,756.88 mi (7,655.45 km) |
| Clemson to Cittanova | 5,204.39 mi (8,375.66 km) |
