| San Marino to River Grove (Illinois) | 1,723.30 mi (2,773.39 km) |
| San Marino to River Ridge (Louisiana) | 1,653.46 mi (2,660.98 km) |
| San Marino to Riverbank (California) | 295.03 mi (474.81 km) |
| San Marino to Riverdale (Georgia) | 1,925.61 mi (3,098.97 km) |
| San Marino to Riverdale (Illinois) | 1,730.94 mi (2,785.68 km) |
| San Marino to Riverside (California) | 43.06 mi (69.29 km) |
| San Marino to Riverside (Ohio) | 1,905.16 mi (3,066.06 km) |
| San Marino to Riverton (Utah) | 555.93 mi (894.68 km) |
| San Marino to Riverton (Wyoming) | 807.69 mi (1,299.85 km) |
| San Marino to Riverview (Florida) | 2,154.27 mi (3,466.97 km) |
| San Marino to Riverview (Michigan) | 1,961.91 mi (3,157.39 km) |
| San Marino to Riviera Beach (Florida) | 2,307.89 mi (3,714.19 km) |
| San Marino to Riviera Beach (Maryland) | 2,311.33 mi (3,719.73 km) |
| San Marino to Roanoke (Virginia) | 2,137.46 mi (3,439.91 km) |
| San Marino to Roanoke Rapids (North Carolina) | 2,271.17 mi (3,655.10 km) |
