| Risca to Carlsbad (New Mexico) | 4,934.75 mi (7,941.71 km) |
| Risca to Carmel (Indiana) | 3,860.63 mi (6,213.08 km) |
| Risca to Carmichael (California) | 5,177.94 mi (8,333.09 km) |
| Risca to Carney (Maryland) | 3,497.96 mi (5,629.42 km) |
| Risca to Carnot-Moon (Pennsylvania) | 3,599.17 mi (5,792.31 km) |
| Risca to Carol Stream (Illinois) | 3,848.26 mi (6,193.18 km) |
| Risca to Carolina (Puerto Rico) | 4,071.98 mi (6,553.23 km) |
| Risca to Carolina Forest (South Carolina) | 3,855.46 mi (6,204.76 km) |
| Risca to Carpentersville (Illinois) | 3,845.01 mi (6,187.95 km) |
| Risca to Carpinteria (California) | 5,361.59 mi (8,628.65 km) |
| Risca to Carrboro (North Carolina) | 3,761.39 mi (6,053.38 km) |
| Risca to Carroll (Iowa) | 4,095.62 mi (6,591.26 km) |
| Risca to Carrollton (Georgia) | 4,119.95 mi (6,630.42 km) |
| Risca to Carrollton (Texas) | 4,623.16 mi (7,440.25 km) |
| Risca to Carrollwood (Florida) | 4,284.78 mi (6,895.68 km) |
