| Potomac to Wichita (Kansas) | 1,093.39 mi (1,759.65 km) |
| Potomac to Wichita Falls (Texas) | 1,233.62 mi (1,985.32 km) |
| Potomac to Wickliffe (Ohio) | 287.73 mi (463.05 km) |
| Potomac to Wildomar (California) | 2,243.08 mi (3,609.89 km) |
| Potomac to Wildwood (Florida) | 759.07 mi (1,221.60 km) |
| Potomac to Wildwood (Missouri) | 725.60 mi (1,167.74 km) |
| Potomac to Wilkes-Barre (Pennsylvania) | 169.26 mi (272.39 km) |
| Potomac to Wilkinsburg (Pennsylvania) | 173.27 mi (278.86 km) |
| Potomac to Williamsburg (Virginia) | 123.42 mi (198.63 km) |
| Potomac to Williamsport (Pennsylvania) | 154.01 mi (247.86 km) |
| Potomac to Williamstown (New Jersey) | 127.19 mi (204.69 km) |
| Potomac to Willimantic (Connecticut) | 321.92 mi (518.08 km) |
| Potomac to Williston (North Dakota) | 1,457.04 mi (2,344.89 km) |
| Potomac to Willmar (Minnesota) | 1,005.83 mi (1,618.73 km) |
| Potomac to Willoughby (Ohio) | 286.87 mi (461.68 km) |
