| Harstad to Carson (California) | 4,980.97 mi (8,016.10 km) |
| Harstad to Carson City (Nevada) | 4,649.85 mi (7,483.20 km) |
| Harstad to Carteret (New Jersey) | 3,656.82 mi (5,885.09 km) |
| Harstad to Cartersville (Georgia) | 4,305.10 mi (6,928.39 km) |
| Harstad to Carthage (Missouri) | 4,324.44 mi (6,959.51 km) |
| Harstad to Cary (Illinois) | 3,874.75 mi (6,235.80 km) |
| Harstad to Cary (North Carolina) | 4,064.14 mi (6,540.59 km) |
| Harstad to Casa de Oro-Mount Helix (California) | 5,032.11 mi (8,098.41 km) |
| Harstad to Casa Grande (Arizona) | 4,935.90 mi (7,943.56 km) |
| Harstad to Casas Adobes (Arizona) | 4,959.97 mi (7,982.30 km) |
| Harstad to Cascades (Virginia) | 3,826.70 mi (6,158.48 km) |
| Harstad to Casper (Wyoming) | 4,190.78 mi (6,744.41 km) |
| Harstad to Casselberry (Florida) | 4,573.02 mi (7,359.56 km) |
| Harstad to Castaic (California) | 4,943.87 mi (7,956.39 km) |
| Harstad to Castle Pines (Colorado) | 4,383.65 mi (7,054.81 km) |
