| Howard to Cloverleaf (Texas) | 1,092.09 mi (1,757.55 km) |
| Howard to Cloverly (Maryland) | 683.61 mi (1,100.16 km) |
| Howard to Clovis (California) | 1,726.60 mi (2,778.70 km) |
| Howard to Clovis (New Mexico) | 1,063.70 mi (1,711.86 km) |
| Howard to Clute (Texas) | 1,146.35 mi (1,844.86 km) |
| Howard to Coachella (California) | 1,669.36 mi (2,686.57 km) |
| Howard to Coalinga (California) | 1,780.53 mi (2,865.48 km) |
| Howard to Coamo (Puerto Rico) | 2,219.83 mi (3,572.47 km) |
| Howard to Coatesville (Pennsylvania) | 701.86 mi (1,129.53 km) |
| Howard to Cockeysville (Maryland) | 684.51 mi (1,101.61 km) |
| Howard to Cocoa (Florida) | 1,188.98 mi (1,913.48 km) |
| Howard to Cocoa Beach (Florida) | 1,194.86 mi (1,922.94 km) |
| Howard to Coconut Creek (Florida) | 1,338.24 mi (2,153.68 km) |
| Howard to Coeur d'Alene (Idaho) | 1,382.89 mi (2,225.55 km) |
| Howard to Cohoes (New York) | 728.55 mi (1,172.49 km) |
