| Hillsborough to Cortona | 4,246.78 mi (6,834.53 km) |
| Hillsborough to Cosenza | 4,580.05 mi (7,370.88 km) |
| Hillsborough to Cossato | 4,005.39 mi (6,446.05 km) |
| Hillsborough to Costa Volpino | 4,079.61 mi (6,565.50 km) |
| Hillsborough to Creazzo | 4,148.14 mi (6,675.78 km) |
| Hillsborough to Crema | 4,076.92 mi (6,561.17 km) |
| Hillsborough to Cremona | 4,099.54 mi (6,597.58 km) |
| Hillsborough to Crevalcore | 4,161.28 mi (6,696.94 km) |
| Hillsborough to Crispiano | 4,573.27 mi (7,359.97 km) |
| Hillsborough to Crosia | 4,592.64 mi (7,391.14 km) |
| Hillsborough to Crotone | 4,626.88 mi (7,446.24 km) |
| Hillsborough to Cuneo | 4,016.14 mi (6,463.35 km) |
| Hillsborough to Cuorgne | 3,988.65 mi (6,419.12 km) |
| Hillsborough to Cusano Milanino | 4,049.58 mi (6,517.16 km) |
| Hillsborough to Cutro | 4,622.90 mi (7,439.83 km) |
