| Harker Heights to Cortona | 5,645.97 mi (9,086.32 km) |
| Harker Heights to Cosenza | 5,987.71 mi (9,636.28 km) |
| Harker Heights to Cossato | 5,401.16 mi (8,692.32 km) |
| Harker Heights to Costa Volpino | 5,469.17 mi (8,801.79 km) |
| Harker Heights to Creazzo | 5,535.94 mi (8,909.24 km) |
| Harker Heights to Crema | 5,470.25 mi (8,803.52 km) |
| Harker Heights to Cremona | 5,493.37 mi (8,840.72 km) |
| Harker Heights to Crevalcore | 5,554.72 mi (8,939.45 km) |
| Harker Heights to Crispiano | 5,972.39 mi (9,611.63 km) |
| Harker Heights to Crosia | 5,997.83 mi (9,652.57 km) |
| Harker Heights to Crotone | 6,033.32 mi (9,709.69 km) |
| Harker Heights to Cuneo | 5,419.73 mi (8,722.22 km) |
| Harker Heights to Cuorgne | 5,386.60 mi (8,668.90 km) |
| Harker Heights to Cusano Milanino | 5,443.05 mi (8,759.74 km) |
| Harker Heights to Cutro | 6,029.90 mi (9,704.18 km) |
