| Risca to Centralia (Illinois) | 4,045.32 mi (6,510.31 km) |
| Risca to Centralia (Washington) | 4,766.74 mi (7,671.32 km) |
| Risca to Centreville (Virginia) | 3,560.68 mi (5,730.36 km) |
| Risca to Ceres (California) | 5,225.73 mi (8,410.01 km) |
| Risca to Cerritos (California) | 5,344.19 mi (8,600.65 km) |
| Risca to Chalco (Nebraska) | 4,185.45 mi (6,735.84 km) |
| Risca to Chalmette (Louisiana) | 4,500.05 mi (7,242.13 km) |
| Risca to Chambersburg (Pennsylvania) | 3,521.15 mi (5,666.74 km) |
| Risca to Chamblee (Georgia) | 4,073.18 mi (6,555.15 km) |
| Risca to Champaign (Illinois) | 3,937.16 mi (6,336.24 km) |
| Risca to Champlin (Minnesota) | 3,896.00 mi (6,270.01 km) |
| Risca to Chandler (Arizona) | 5,164.27 mi (8,311.09 km) |
| Risca to Chanhassen (Minnesota) | 3,916.81 mi (6,303.49 km) |
| Risca to Channahon (Illinois) | 3,876.07 mi (6,237.93 km) |
| Risca to Channelview (Texas) | 4,716.35 mi (7,590.22 km) |
