| Risca to Caño Martin Peña (Puerto Rico) | 4,073.66 mi (6,555.93 km) |
| Risca to Cañon City (Colorado) | 4,653.44 mi (7,488.99 km) |
| Risca to Canóvanas (Puerto Rico) | 4,070.58 mi (6,550.96 km) |
| Risca to Canton (Georgia) | 4,063.48 mi (6,539.54 km) |
| Risca to Canton (Illinois) | 3,984.65 mi (6,412.68 km) |
| Risca to Canton (Mississippi) | 4,369.82 mi (7,032.55 km) |
| Risca to Canton (Ohio) | 3,632.54 mi (5,846.01 km) |
| Risca to Canyon (Texas) | 4,712.13 mi (7,583.44 km) |
| Risca to Canyon Lake (California) | 5,327.47 mi (8,573.73 km) |
| Risca to Canyon Lake (Texas) | 4,837.06 mi (7,784.49 km) |
| Risca to Cape Coral (Florida) | 4,333.67 mi (6,974.37 km) |
| Risca to Cape Girardeau (Missouri) | 4,120.39 mi (6,631.13 km) |
| Risca to Carbondale (Illinois) | 4,087.42 mi (6,578.06 km) |
| Risca to Carlisle (Pennsylvania) | 3,490.90 mi (5,618.05 km) |
| Risca to Carlsbad (California) | 5,359.90 mi (8,625.93 km) |
