| Prospect Heights to Cortona | 4,732.43 mi (7,616.12 km) |
| Prospect Heights to Cosenza | 5,078.20 mi (8,172.57 km) |
| Prospect Heights to Cossato | 4,486.65 mi (7,220.56 km) |
| Prospect Heights to Costa Volpino | 4,551.46 mi (7,324.87 km) |
| Prospect Heights to Creazzo | 4,617.26 mi (7,430.76 km) |
| Prospect Heights to Crema | 4,554.27 mi (7,329.40 km) |
| Prospect Heights to Cremona | 4,577.55 mi (7,366.86 km) |
| Prospect Heights to Crevalcore | 4,638.51 mi (7,464.96 km) |
| Prospect Heights to Crispiano | 5,057.72 mi (8,139.61 km) |
| Prospect Heights to Crosia | 5,086.65 mi (8,186.17 km) |
| Prospect Heights to Crotone | 5,122.84 mi (8,244.41 km) |
| Prospect Heights to Cuneo | 4,509.64 mi (7,257.56 km) |
| Prospect Heights to Cuorgne | 4,473.30 mi (7,199.09 km) |
| Prospect Heights to Cusano Milanino | 4,527.24 mi (7,285.89 km) |
| Prospect Heights to Cutro | 5,119.80 mi (8,239.52 km) |
