| Castle Rock to Willow Grove (Pennsylvania) | 1,572.88 mi (2,531.30 km) |
| Castle Rock to Willowbrook (California) | 830.89 mi (1,337.19 km) |
| Castle Rock to Willowick (Ohio) | 1,234.58 mi (1,986.86 km) |
| Castle Rock to Wilmette (Illinois) | 914.25 mi (1,471.34 km) |
| Castle Rock to Wilmington (Delaware) | 1,554.60 mi (2,501.89 km) |
| Castle Rock to Wilmington (North Carolina) | 1,528.00 mi (2,459.07 km) |
| Castle Rock to Wilmington (Ohio) | 1,120.65 mi (1,803.52 km) |
| Castle Rock to Wilmington Island (Georgia) | 1,428.21 mi (2,298.48 km) |
| Castle Rock to Wilson (North Carolina) | 1,490.48 mi (2,398.70 km) |
| Castle Rock to Wilsonville (Oregon) | 999.79 mi (1,609.01 km) |
| Castle Rock to Wilton Manors (Florida) | 1,692.78 mi (2,724.27 km) |
| Castle Rock to Wimauma (Florida) | 1,522.36 mi (2,450.00 km) |
| Castle Rock to Winchester (Kentucky) | 1,115.95 mi (1,795.95 km) |
| Castle Rock to Winchester (Nevada) | 604.25 mi (972.45 km) |
| Castle Rock to Winchester (Virginia) | 1,421.80 mi (2,288.16 km) |
