| San Mateo to Reading (Pennsylvania) | 2,471.47 mi (3,977.44 km) |
| San Mateo to Red Bank (New Jersey) | 2,567.38 mi (4,131.80 km) |
| San Mateo to Red Bank (Tennessee) | 2,053.98 mi (3,305.56 km) |
| San Mateo to Red Bluff (California) | 181.15 mi (291.54 km) |
| San Mateo to Red Hill (South Carolina) | 2,423.23 mi (3,899.81 km) |
| San Mateo to Red Oak (Texas) | 1,480.29 mi (2,382.30 km) |
| San Mateo to Red Wing (Minnesota) | 1,611.72 mi (2,593.81 km) |
| San Mateo to Redan (Georgia) | 2,143.33 mi (3,449.35 km) |
| San Mateo to Redding (California) | 208.52 mi (335.57 km) |
| San Mateo to Redland (Maryland) | 2,424.52 mi (3,901.89 km) |
| San Mateo to Redlands (California) | 376.06 mi (605.21 km) |
| San Mateo to Redmond (Oregon) | 467.28 mi (752.02 km) |
| San Mateo to Redmond (Washington) | 699.58 mi (1,125.86 km) |
| San Mateo to Redondo Beach (California) | 337.44 mi (543.06 km) |
| San Mateo to Redwood City (California) | 5.87 mi (9.44 km) |
