| Harstad to Castle Rock (Colorado) | 4,388.93 mi (7,063.30 km) |
| Harstad to Castro Valley (California) | 4,778.97 mi (7,691.01 km) |
| Harstad to Catalina Foothills (Arizona) | 4,960.20 mi (7,982.68 km) |
| Harstad to Cataño (Puerto Rico) | 4,851.23 mi (7,807.31 km) |
| Harstad to Cathedral City (California) | 4,952.86 mi (7,970.86 km) |
| Harstad to Catonsville (Maryland) | 3,797.97 mi (6,112.24 km) |
| Harstad to Cave Spring (Virginia) | 4,001.60 mi (6,439.95 km) |
| Harstad to Cayce (South Carolina) | 4,231.84 mi (6,810.49 km) |
| Harstad to Cayey (Puerto Rico) | 4,872.31 mi (7,841.23 km) |
| Harstad to Cedar City (Utah) | 4,643.72 mi (7,473.35 km) |
| Harstad to Cedar Falls (Iowa) | 3,944.42 mi (6,347.92 km) |
| Harstad to Cedar Hill (Texas) | 4,672.99 mi (7,520.45 km) |
| Harstad to Cedar Lake (Indiana) | 3,910.03 mi (6,292.59 km) |
| Harstad to Cedar Mill (Oregon) | 4,266.91 mi (6,866.93 km) |
| Harstad to Cedar Park (Texas) | 4,824.72 mi (7,764.63 km) |
