| Risca to Cedar Rapids (Iowa) | 3,981.34 mi (6,407.35 km) |
| Risca to Cedarburg (Wisconsin) | 3,780.08 mi (6,083.46 km) |
| Risca to Celebration (Florida) | 4,231.54 mi (6,810.00 km) |
| Risca to Celina (Ohio) | 3,771.08 mi (6,068.97 km) |
| Risca to Celina (Texas) | 4,602.38 mi (7,406.81 km) |
| Risca to Centennial (Colorado) | 4,581.31 mi (7,372.90 km) |
| Risca to Center Point (Alabama) | 4,182.39 mi (6,730.91 km) |
| Risca to Centereach (New York) | 3,292.94 mi (5,299.47 km) |
| Risca to Centerton (Arkansas) | 4,352.37 mi (7,004.47 km) |
| Risca to Centerville (Ohio) | 3,796.47 mi (6,109.83 km) |
| Risca to Centerville (Utah) | 4,750.74 mi (7,645.57 km) |
| Risca to Central (Louisiana) | 4,512.67 mi (7,262.44 km) |
| Risca to Central Falls (Rhode Island) | 3,180.51 mi (5,118.53 km) |
| Risca to Central Islip (New York) | 3,301.16 mi (5,312.71 km) |
| Risca to Central Point (Oregon) | 5,011.68 mi (8,065.52 km) |
