| Clarksburg to Cortona | 4,411.12 mi (7,099.01 km) |
| Clarksburg to Cosenza | 4,744.54 mi (7,635.59 km) |
| Clarksburg to Cossato | 4,169.62 mi (6,710.36 km) |
| Clarksburg to Costa Volpino | 4,243.66 mi (6,829.51 km) |
| Clarksburg to Creazzo | 4,312.14 mi (6,939.72 km) |
| Clarksburg to Crema | 4,241.09 mi (6,825.38 km) |
| Clarksburg to Cremona | 4,263.73 mi (6,861.81 km) |
| Clarksburg to Crevalcore | 4,325.47 mi (6,961.17 km) |
| Clarksburg to Crispiano | 4,737.64 mi (7,624.50 km) |
| Clarksburg to Crosia | 4,757.11 mi (7,655.82 km) |
| Clarksburg to Crotone | 4,791.35 mi (7,710.94 km) |
| Clarksburg to Cuneo | 4,180.55 mi (6,727.95 km) |
| Clarksburg to Cuorgne | 4,152.95 mi (6,683.52 km) |
| Clarksburg to Cusano Milanino | 4,213.75 mi (6,781.38 km) |
| Clarksburg to Cutro | 4,787.38 mi (7,704.54 km) |
