| Clemson to Collegno | 4,593.53 mi (7,392.58 km) |
| Clemson to Cologno al Serio | 4,670.05 mi (7,515.72 km) |
| Clemson to Cologno Monzese | 4,653.63 mi (7,489.29 km) |
| Clemson to Colorno | 4,720.31 mi (7,596.61 km) |
| Clemson to Comacchio | 4,805.54 mi (7,733.77 km) |
| Clemson to Comiso | 5,188.29 mi (8,349.74 km) |
| Clemson to Como | 4,636.53 mi (7,461.78 km) |
| Clemson to Concordia Sagittaria | 4,798.10 mi (7,721.80 km) |
| Clemson to Concorezzo | 4,654.19 mi (7,490.19 km) |
| Clemson to Conegliano | 4,770.80 mi (7,677.86 km) |
| Clemson to Conselice | 4,796.62 mi (7,719.41 km) |
| Clemson to Conselve | 4,774.20 mi (7,683.34 km) |
| Clemson to Conversano | 5,152.48 mi (8,292.12 km) |
| Clemson to Copertino | 5,219.91 mi (8,400.64 km) |
| Clemson to Copparo | 4,783.84 mi (7,698.85 km) |
