| Hard to Crest Hill (Illinois) | 4,500.23 mi (7,242.43 km) |
| Hard to Crestview (Florida) | 4,956.19 mi (7,976.22 km) |
| Hard to Crestwood (Illinois) | 4,482.60 mi (7,214.05 km) |
| Hard to Crestwood (Missouri) | 4,730.42 mi (7,612.88 km) |
| Hard to Creve Coeur (Missouri) | 4,727.85 mi (7,608.74 km) |
| Hard to Crofton (Maryland) | 4,157.98 mi (6,691.62 km) |
| Hard to Crossville (Tennessee) | 4,641.91 mi (7,470.43 km) |
| Hard to Crowley (Louisiana) | 5,222.42 mi (8,404.67 km) |
| Hard to Crowley (Texas) | 5,299.75 mi (8,529.12 km) |
| Hard to Crown Point (Indiana) | 4,478.24 mi (7,207.03 km) |
| Hard to Crystal (Minnesota) | 4,529.64 mi (7,289.75 km) |
| Hard to Crystal Lake (Illinois) | 4,477.91 mi (7,206.50 km) |
| Hard to Cudahy (California) | 5,949.99 mi (9,575.58 km) |
| Hard to Cudahy (Wisconsin) | 4,427.09 mi (7,124.71 km) |
| Hard to Cullman (Alabama) | 4,800.67 mi (7,725.93 km) |
