| San Marino to Reedley (California) | 186.88 mi (300.75 km) |
| San Marino to Reidsville (North Carolina) | 2,160.69 mi (3,477.29 km) |
| San Marino to Reisterstown (Maryland) | 2,294.46 mi (3,692.57 km) |
| San Marino to Rendon (Texas) | 1,207.60 mi (1,943.44 km) |
| San Marino to Reno (Nevada) | 387.05 mi (622.89 km) |
| San Marino to Renton (Washington) | 946.79 mi (1,523.71 km) |
| San Marino to Republic (Missouri) | 1,396.91 mi (2,248.11 km) |
| San Marino to Reston (Virginia) | 2,268.61 mi (3,650.97 km) |
| San Marino to Revere (Massachusetts) | 2,584.58 mi (4,159.49 km) |
| San Marino to Rexburg (Idaho) | 750.75 mi (1,208.22 km) |
| San Marino to Reynoldsburg (Ohio) | 1,975.71 mi (3,179.60 km) |
| San Marino to Rialto (California) | 41.41 mi (66.65 km) |
| San Marino to Richardson (Texas) | 1,232.85 mi (1,984.07 km) |
| San Marino to Richfield (Minnesota) | 1,509.21 mi (2,428.84 km) |
| San Marino to Richfield (Wisconsin) | 1,718.53 mi (2,765.70 km) |
