| San Marino to Conyers (Georgia) | 1,947.72 mi (3,134.56 km) |
| San Marino to Cookeville (Tennessee) | 1,838.86 mi (2,959.36 km) |
| San Marino to Coolidge (Arizona) | 388.10 mi (624.59 km) |
| San Marino to Coon Rapids (Minnesota) | 1,515.49 mi (2,438.95 km) |
| San Marino to Cooper City (Florida) | 2,315.30 mi (3,726.11 km) |
| San Marino to Coos Bay (Oregon) | 719.06 mi (1,157.21 km) |
| San Marino to Copiague (New York) | 2,469.04 mi (3,973.54 km) |
| San Marino to Coppell (Texas) | 1,216.87 mi (1,958.37 km) |
| San Marino to Copperas Cove (Texas) | 1,191.60 mi (1,917.69 km) |
| San Marino to Coral Gables (Florida) | 2,325.53 mi (3,742.57 km) |
| San Marino to Coral Springs (Florida) | 2,310.81 mi (3,718.88 km) |
| San Marino to Coral Terrace (Florida) | 2,322.44 mi (3,737.61 km) |
| San Marino to Coralville (Iowa) | 1,529.91 mi (2,462.15 km) |
| San Marino to Coram (New York) | 2,488.16 mi (4,004.31 km) |
| San Marino to Corcoran (California) | 158.33 mi (254.81 km) |
