| San Marino to Clemson (South Carolina) | 2,002.36 mi (3,222.49 km) |
| San Marino to Clermont (Florida) | 2,170.66 mi (3,493.34 km) |
| San Marino to Cleveland (Mississippi) | 1,565.34 mi (2,519.17 km) |
| San Marino to Cleveland (Ohio) | 2,036.68 mi (3,277.72 km) |
| San Marino to Cleveland (Tennessee) | 1,882.03 mi (3,028.83 km) |
| San Marino to Cleveland Heights (Ohio) | 2,042.83 mi (3,287.61 km) |
| San Marino to Cliffside Park (New Jersey) | 2,437.23 mi (3,922.34 km) |
| San Marino to Clifton (Colorado) | 634.93 mi (1,021.82 km) |
| San Marino to Clifton (New Jersey) | 2,428.21 mi (3,907.82 km) |
| San Marino to Clinton (Iowa) | 1,600.39 mi (2,575.58 km) |
| San Marino to Clinton (Maryland) | 2,293.33 mi (3,690.76 km) |
| San Marino to Clinton (Mississippi) | 1,604.70 mi (2,582.52 km) |
| San Marino to Clinton (Utah) | 586.65 mi (944.11 km) |
| San Marino to Clive (Iowa) | 1,417.67 mi (2,281.52 km) |
| San Marino to Cloquet (Minnesota) | 1,593.07 mi (2,563.80 km) |
