| Risca to Chantilly (Virginia) | 3,558.81 mi (5,727.36 km) |
| Risca to Chaparral (New Mexico) | 5,034.51 mi (8,102.27 km) |
| Risca to Chapel Hill (North Carolina) | 3,759.32 mi (6,050.04 km) |
| Risca to Charleston (Illinois) | 3,962.87 mi (6,377.62 km) |
| Risca to Charleston (South Carolina) | 3,944.79 mi (6,348.53 km) |
| Risca to Charleston (West Virginia) | 3,754.17 mi (6,041.74 km) |
| Risca to Charlotte (North Carolina) | 3,867.06 mi (6,223.43 km) |
| Risca to Charlottesville (Virginia) | 3,639.72 mi (5,857.57 km) |
| Risca to Chaska (Minnesota) | 3,920.28 mi (6,309.09 km) |
| Risca to Chatham (Illinois) | 4,013.09 mi (6,458.45 km) |
| Risca to Chattanooga (Tennessee) | 4,055.12 mi (6,526.09 km) |
| Risca to Cheat Lake (West Virginia) | 3,622.46 mi (5,829.78 km) |
| Risca to Chelsea (Alabama) | 4,195.68 mi (6,752.29 km) |
| Risca to Chelsea (Massachusetts) | 3,144.87 mi (5,061.18 km) |
| Risca to Cheney (Washington) | 4,572.76 mi (7,359.14 km) |
