| Risca to Clarkston (Georgia) | 4,074.19 mi (6,556.78 km) |
| Risca to Clarksville (Indiana) | 3,921.88 mi (6,311.66 km) |
| Risca to Clarksville (Tennessee) | 4,067.71 mi (6,546.35 km) |
| Risca to Clawson (Michigan) | 3,626.81 mi (5,836.78 km) |
| Risca to Clay (Alabama) | 4,176.83 mi (6,721.96 km) |
| Risca to Clayton (California) | 5,235.86 mi (8,426.30 km) |
| Risca to Clayton (Missouri) | 4,086.73 mi (6,576.96 km) |
| Risca to Clayton (North Carolina) | 3,747.30 mi (6,030.70 km) |
| Risca to Clayton (Ohio) | 3,793.07 mi (6,104.36 km) |
| Risca to Clearfield (Utah) | 4,745.94 mi (7,637.86 km) |
| Risca to Clearlake (California) | 5,198.85 mi (8,366.75 km) |
| Risca to Clearwater (Florida) | 4,299.14 mi (6,918.80 km) |
| Risca to Cleburne (Texas) | 4,675.65 mi (7,524.73 km) |
| Risca to Clemmons (North Carolina) | 3,810.15 mi (6,131.84 km) |
| Risca to Clemson (South Carolina) | 3,973.66 mi (6,394.99 km) |
