| Middlesex to Willow Grove (Pennsylvania) | 43.88 mi (70.61 km) |
| Middlesex to Willowbrook (California) | 2,423.51 mi (3,900.26 km) |
| Middlesex to Willowick (Ohio) | 369.91 mi (595.32 km) |
| Middlesex to Wilmette (Illinois) | 693.40 mi (1,115.92 km) |
| Middlesex to Wilmington (Delaware) | 79.56 mi (128.05 km) |
| Middlesex to Wilmington (North Carolina) | 477.30 mi (768.13 km) |
| Middlesex to Wilmington (Ohio) | 498.87 mi (802.86 km) |
| Middlesex to Wilmington Island (Georgia) | 692.84 mi (1,115.02 km) |
| Middlesex to Wilson (North Carolina) | 382.88 mi (616.18 km) |
| Middlesex to Wilsonville (Oregon) | 2,426.37 mi (3,904.86 km) |
| Middlesex to Wilton Manors (Florida) | 1,047.16 mi (1,685.23 km) |
| Middlesex to Wimauma (Florida) | 994.34 mi (1,600.24 km) |
| Middlesex to Winchester (Kentucky) | 547.45 mi (881.04 km) |
| Middlesex to Winchester (Nevada) | 2,203.26 mi (3,545.80 km) |
| Middlesex to Winchester (Virginia) | 217.49 mi (350.01 km) |
