| San Marino to Robbinsdale (Minnesota) | 1,510.64 mi (2,431.13 km) |
| San Marino to Robertsville (New Jersey) | 2,423.43 mi (3,900.14 km) |
| San Marino to Robinson (Texas) | 1,231.07 mi (1,981.22 km) |
| San Marino to Robstown (Texas) | 1,284.99 mi (2,068.00 km) |
| San Marino to Rochester (Michigan) | 1,968.97 mi (3,168.76 km) |
| San Marino to Rochester (Minnesota) | 1,526.96 mi (2,457.41 km) |
| San Marino to Rochester (New Hampshire) | 2,583.06 mi (4,157.03 km) |
| San Marino to Rochester (New York) | 2,249.00 mi (3,619.42 km) |
| San Marino to Rochester Hills (Michigan) | 1,966.98 mi (3,165.54 km) |
| San Marino to Rock Hill (South Carolina) | 2,099.65 mi (3,379.07 km) |
| San Marino to Rock Island (Illinois) | 1,578.54 mi (2,540.41 km) |
| San Marino to Rock Springs (Wyoming) | 707.63 mi (1,138.82 km) |
| San Marino to Rockford (Illinois) | 1,664.92 mi (2,679.43 km) |
| San Marino to Rockledge (Florida) | 2,231.94 mi (3,591.96 km) |
| San Marino to Rocklin (California) | 367.56 mi (591.53 km) |
