| San Mateo to Reedley (California) | 171.11 mi (275.38 km) |
| San Mateo to Reidsville (North Carolina) | 2,335.67 mi (3,758.90 km) |
| San Mateo to Reisterstown (Maryland) | 2,437.35 mi (3,922.53 km) |
| San Mateo to Rendon (Texas) | 1,454.46 mi (2,340.73 km) |
| San Mateo to Reno (Nevada) | 191.74 mi (308.58 km) |
| San Mateo to Renton (Washington) | 685.86 mi (1,103.79 km) |
| San Mateo to Republic (Missouri) | 1,579.56 mi (2,542.06 km) |
| San Mateo to Reston (Virginia) | 2,416.72 mi (3,889.34 km) |
| San Mateo to Revere (Massachusetts) | 2,695.58 mi (4,338.12 km) |
| San Mateo to Rexburg (Idaho) | 700.11 mi (1,126.72 km) |
| San Mateo to Reynoldsburg (Ohio) | 2,118.33 mi (3,409.12 km) |
| San Mateo to Rialto (California) | 363.71 mi (585.33 km) |
| San Mateo to Richardson (Texas) | 1,473.77 mi (2,371.81 km) |
| San Mateo to Richfield (Minnesota) | 1,581.45 mi (2,545.09 km) |
| San Mateo to Richfield (Wisconsin) | 1,822.04 mi (2,932.29 km) |
