| Risca to Clermont (Florida) | 4,227.65 mi (6,803.75 km) |
| Risca to Cleveland (Mississippi) | 4,340.99 mi (6,986.15 km) |
| Risca to Cleveland (Ohio) | 3,615.42 mi (5,818.45 km) |
| Risca to Cleveland (Tennessee) | 4,034.21 mi (6,492.43 km) |
| Risca to Cleveland Heights (Ohio) | 3,609.22 mi (5,808.48 km) |
| Risca to Cliffside Park (New Jersey) | 3,332.20 mi (5,362.67 km) |
| Risca to Clifton (Colorado) | 4,733.84 mi (7,618.37 km) |
| Risca to Clifton (New Jersey) | 3,337.44 mi (5,371.09 km) |
| Risca to Clinton (Iowa) | 3,932.55 mi (6,328.83 km) |
| Risca to Clinton (Maryland) | 3,542.74 mi (5,701.49 km) |
| Risca to Clinton (Mississippi) | 4,394.42 mi (7,072.13 km) |
| Risca to Clinton (Utah) | 4,745.36 mi (7,636.92 km) |
| Risca to Clive (Iowa) | 4,077.63 mi (6,562.32 km) |
| Risca to Cloquet (Minnesota) | 3,792.91 mi (6,104.10 km) |
| Risca to Cloverleaf (Texas) | 4,718.83 mi (7,594.23 km) |
