| Howard to Carrollwood (Florida) | 1,181.67 mi (1,901.71 km) |
| Howard to Carson (California) | 1,763.72 mi (2,838.43 km) |
| Howard to Carson City (Nevada) | 1,660.23 mi (2,671.89 km) |
| Howard to Carteret (New Jersey) | 756.03 mi (1,216.71 km) |
| Howard to Cartersville (Georgia) | 739.99 mi (1,190.90 km) |
| Howard to Carthage (Missouri) | 606.86 mi (976.65 km) |
| Howard to Cary (Illinois) | 163.07 mi (262.44 km) |
| Howard to Cary (North Carolina) | 778.90 mi (1,253.52 km) |
| Howard to Casa de Oro-Mount Helix (California) | 1,745.46 mi (2,809.05 km) |
| Howard to Casa Grande (Arizona) | 1,500.33 mi (2,414.55 km) |
| Howard to Casas Adobes (Arizona) | 1,492.16 mi (2,401.40 km) |
| Howard to Cascades (Virginia) | 669.66 mi (1,077.71 km) |
| Howard to Casper (Wyoming) | 916.28 mi (1,474.61 km) |
| Howard to Casselberry (Florida) | 1,160.44 mi (1,867.54 km) |
| Howard to Castaic (California) | 1,757.31 mi (2,828.12 km) |
