| Rockville to Wichita (Kansas) | 1,095.37 mi (1,762.82 km) |
| Rockville to Wichita Falls (Texas) | 1,236.52 mi (1,989.99 km) |
| Rockville to Wickliffe (Ohio) | 286.31 mi (460.77 km) |
| Rockville to Wildomar (California) | 2,244.92 mi (3,612.84 km) |
| Rockville to Wildwood (Florida) | 764.29 mi (1,230.01 km) |
| Rockville to Wildwood (Missouri) | 727.55 mi (1,170.88 km) |
| Rockville to Wilkes-Barre (Pennsylvania) | 164.03 mi (263.98 km) |
| Rockville to Wilkinsburg (Pennsylvania) | 172.26 mi (277.23 km) |
| Rockville to Williamsburg (Virginia) | 127.68 mi (205.48 km) |
| Rockville to Williamsport (Pennsylvania) | 149.13 mi (240.00 km) |
| Rockville to Williamstown (New Jersey) | 123.50 mi (198.75 km) |
| Rockville to Willimantic (Connecticut) | 317.38 mi (510.77 km) |
| Rockville to Williston (North Dakota) | 1,456.07 mi (2,343.32 km) |
| Rockville to Willmar (Minnesota) | 1,005.21 mi (1,617.73 km) |
| Rockville to Willoughby (Ohio) | 285.38 mi (459.28 km) |
