| Harker Heights to Cordele (Georgia) | 819.15 mi (1,318.29 km) |
| Harker Heights to Corinth (Mississippi) | 593.07 mi (954.45 km) |
| Harker Heights to Corinth (Texas) | 148.04 mi (238.24 km) |
| Harker Heights to Cornelius (North Carolina) | 1,013.84 mi (1,631.61 km) |
| Harker Heights to Cornelius (Oregon) | 1,689.89 mi (2,719.61 km) |
| Harker Heights to Corning (New York) | 1,369.45 mi (2,203.92 km) |
| Harker Heights to Corona (California) | 1,175.46 mi (1,891.72 km) |
| Harker Heights to Coronado (California) | 1,148.99 mi (1,849.13 km) |
| Harker Heights to Corpus Christi (Texas) | 230.77 mi (371.39 km) |
| Harker Heights to Corsicana (Texas) | 99.13 mi (159.54 km) |
| Harker Heights to Cortland (New York) | 1,423.62 mi (2,291.09 km) |
| Harker Heights to Corvallis (Oregon) | 1,670.75 mi (2,688.81 km) |
| Harker Heights to Coshocton (Ohio) | 1,088.51 mi (1,751.78 km) |
| Harker Heights to Costa Mesa (California) | 1,194.61 mi (1,922.54 km) |
| Harker Heights to Coto de Caza (California) | 1,175.53 mi (1,891.83 km) |
