| San Mateo to Willow Grove (Pennsylvania) | 2,515.93 mi (4,049.00 km) |
| San Mateo to Willowbrook (California) | 339.36 mi (546.15 km) |
| San Mateo to Willowick (Ohio) | 2,172.39 mi (3,496.13 km) |
| San Mateo to Wilmette (Illinois) | 1,848.93 mi (2,975.56 km) |
| San Mateo to Wilmington (Delaware) | 2,499.60 mi (4,022.72 km) |
| San Mateo to Wilmington (North Carolina) | 2,474.69 mi (3,982.62 km) |
| San Mateo to Wilmington (Ohio) | 2,070.13 mi (3,331.55 km) |
| San Mateo to Wilmington Island (Georgia) | 2,357.91 mi (3,794.69 km) |
| San Mateo to Wilson (North Carolina) | 2,440.85 mi (3,928.16 km) |
| San Mateo to Wilsonville (Oregon) | 536.60 mi (863.57 km) |
| San Mateo to Wilton Manors (Florida) | 2,573.20 mi (4,141.16 km) |
| San Mateo to Wimauma (Florida) | 2,405.86 mi (3,871.86 km) |
| San Mateo to Winchester (Kentucky) | 2,067.29 mi (3,326.98 km) |
| San Mateo to Winchester (Nevada) | 408.50 mi (657.41 km) |
| San Mateo to Winchester (Virginia) | 2,370.04 mi (3,814.21 km) |
