| San Mateo to Rosemead (California) | 337.70 mi (543.47 km) |
| San Mateo to Rosemont (California) | 86.27 mi (138.83 km) |
| San Mateo to Rosemount (Minnesota) | 1,590.69 mi (2,559.96 km) |
| San Mateo to Rosenberg (Texas) | 1,615.91 mi (2,600.55 km) |
| San Mateo to Roseville (California) | 99.95 mi (160.86 km) |
| San Mateo to Roseville (Michigan) | 2,091.93 mi (3,366.64 km) |
| San Mateo to Roseville (Minnesota) | 1,589.09 mi (2,557.39 km) |
| San Mateo to Rossmoor (California) | 352.11 mi (566.66 km) |
| San Mateo to Rossville (Maryland) | 2,456.36 mi (3,953.13 km) |
| San Mateo to Roswell (Georgia) | 2,126.76 mi (3,422.69 km) |
| San Mateo to Roswell (New Mexico) | 1,039.72 mi (1,673.27 km) |
| San Mateo to Round Lake (Illinois) | 1,829.11 mi (2,943.67 km) |
| San Mateo to Round Lake Beach (Illinois) | 1,830.33 mi (2,945.63 km) |
| San Mateo to Round Rock (Texas) | 1,487.09 mi (2,393.24 km) |
| San Mateo to Rowland Heights (California) | 350.11 mi (563.45 km) |
