| Boulder to Wichita (Kansas) | 454.85 mi (732.01 km) |
| Boulder to Wichita Falls (Texas) | 562.15 mi (904.69 km) |
| Boulder to Wickliffe (Ohio) | 1,244.48 mi (2,002.80 km) |
| Boulder to Wildomar (California) | 796.95 mi (1,282.57 km) |
| Boulder to Wildwood (Florida) | 1,529.34 mi (2,461.24 km) |
| Boulder to Wildwood (Missouri) | 785.13 mi (1,263.54 km) |
| Boulder to Wilkes-Barre (Pennsylvania) | 1,535.25 mi (2,470.75 km) |
| Boulder to Wilkinsburg (Pennsylvania) | 1,334.35 mi (2,147.42 km) |
| Boulder to Williamsburg (Virginia) | 1,545.38 mi (2,487.05 km) |
| Boulder to Williamsport (Pennsylvania) | 1,475.36 mi (2,374.36 km) |
| Boulder to Williamstown (New Jersey) | 1,598.09 mi (2,571.89 km) |
| Boulder to Willimantic (Connecticut) | 1,719.66 mi (2,767.52 km) |
| Boulder to Williston (North Dakota) | 569.20 mi (916.05 km) |
| Boulder to Willmar (Minnesota) | 626.24 mi (1,007.83 km) |
| Boulder to Willoughby (Ohio) | 1,247.48 mi (2,007.62 km) |
