| Highlands Ranch to Cortona | 5,494.32 mi (8,842.25 km) |
| Highlands Ranch to Cosenza | 5,846.05 mi (9,408.31 km) |
| Highlands Ranch to Cossato | 5,248.86 mi (8,447.23 km) |
| Highlands Ranch to Costa Volpino | 5,303.84 mi (8,535.70 km) |
| Highlands Ranch to Creazzo | 5,365.84 mi (8,635.48 km) |
| Highlands Ranch to Crema | 5,311.68 mi (8,548.32 km) |
| Highlands Ranch to Cremona | 5,335.13 mi (8,586.06 km) |
| Highlands Ranch to Crevalcore | 5,394.24 mi (8,681.19 km) |
| Highlands Ranch to Crispiano | 5,812.84 mi (9,354.87 km) |
| Highlands Ranch to Crosia | 5,850.43 mi (9,415.36 km) |
| Highlands Ranch to Crotone | 5,887.90 mi (9,475.66 km) |
| Highlands Ranch to Cuneo | 5,282.53 mi (8,501.40 km) |
| Highlands Ranch to Cuorgne | 5,238.84 mi (8,431.10 km) |
| Highlands Ranch to Cusano Milanino | 5,285.42 mi (8,506.07 km) |
| Highlands Ranch to Cutro | 5,885.81 mi (9,472.30 km) |
