| San Mateo to Robbinsdale (Minnesota) | 1,580.57 mi (2,543.69 km) |
| San Mateo to Robertsville (New Jersey) | 2,555.81 mi (4,113.17 km) |
| San Mateo to Robinson (Texas) | 1,489.95 mi (2,397.84 km) |
| San Mateo to Robstown (Texas) | 1,577.43 mi (2,538.63 km) |
| San Mateo to Rochester (Michigan) | 2,081.83 mi (3,350.38 km) |
| San Mateo to Rochester (Minnesota) | 1,613.51 mi (2,596.69 km) |
| San Mateo to Rochester (New Hampshire) | 2,686.23 mi (4,323.06 km) |
| San Mateo to Rochester (New York) | 2,356.47 mi (3,792.37 km) |
| San Mateo to Rochester Hills (Michigan) | 2,080.07 mi (3,347.56 km) |
| San Mateo to Rock Hill (South Carolina) | 2,289.28 mi (3,684.25 km) |
| San Mateo to Rock Island (Illinois) | 1,703.10 mi (2,740.87 km) |
| San Mateo to Rock Springs (Wyoming) | 750.09 mi (1,207.15 km) |
| San Mateo to Rockford (Illinois) | 1,780.25 mi (2,865.04 km) |
| San Mateo to Rockledge (Florida) | 2,472.44 mi (3,979.00 km) |
| San Mateo to Rocklin (California) | 104.20 mi (167.69 km) |
