| Risca to Cicero (Illinois) | 3,837.31 mi (6,175.55 km) |
| Risca to Cimarron Hills (Colorado) | 4,613.26 mi (7,424.33 km) |
| Risca to Cincinnati (Ohio) | 3,833.50 mi (6,169.42 km) |
| Risca to Cinco Ranch (Texas) | 4,744.87 mi (7,636.14 km) |
| Risca to Circleville (Ohio) | 3,749.29 mi (6,033.90 km) |
| Risca to Citrus (California) | 5,324.26 mi (8,568.56 km) |
| Risca to Citrus Heights (California) | 5,173.19 mi (8,325.44 km) |
| Risca to Citrus Park (Florida) | 4,286.04 mi (6,897.71 km) |
| Risca to Claiborne (Louisiana) | 4,459.98 mi (7,177.65 km) |
| Risca to Claremont (California) | 5,317.94 mi (8,558.40 km) |
| Risca to Claremont (New Hampshire) | 3,158.37 mi (5,082.90 km) |
| Risca to Claremore (Oklahoma) | 4,405.18 mi (7,089.45 km) |
| Risca to Clarksburg (Maryland) | 3,536.43 mi (5,691.33 km) |
| Risca to Clarksburg (West Virginia) | 3,658.47 mi (5,887.74 km) |
| Risca to Clarksdale (Mississippi) | 4,312.41 mi (6,940.15 km) |
