| Alton to Clermont (Florida) | 4,323.29 mi (6,957.66 km) |
| Alton to Cleveland (Mississippi) | 4,437.40 mi (7,141.30 km) |
| Alton to Cleveland (Ohio) | 3,711.74 mi (5,973.47 km) |
| Alton to Cleveland (Tennessee) | 4,130.71 mi (6,647.74 km) |
| Alton to Cleveland Heights (Ohio) | 3,705.55 mi (5,963.50 km) |
| Alton to Cliffside Park (New Jersey) | 3,428.67 mi (5,517.90 km) |
| Alton to Clifton (Colorado) | 4,825.60 mi (7,766.05 km) |
| Alton to Clifton (New Jersey) | 3,433.91 mi (5,526.34 km) |
| Alton to Clinton (Iowa) | 4,027.87 mi (6,482.24 km) |
| Alton to Clinton (Maryland) | 3,639.18 mi (5,856.70 km) |
| Alton to Clinton (Mississippi) | 4,490.90 mi (7,227.41 km) |
| Alton to Clinton (Utah) | 4,835.02 mi (7,781.21 km) |
| Alton to Clive (Iowa) | 4,172.40 mi (6,714.83 km) |
| Alton to Cloquet (Minnesota) | 3,886.29 mi (6,254.37 km) |
| Alton to Cloverleaf (Texas) | 4,815.24 mi (7,749.37 km) |
