| Rockville to Watervliet (New York) | 309.31 mi (497.79 km) |
| Rockville to Watsonville (California) | 2,409.21 mi (3,877.25 km) |
| Rockville to Wauconda (Illinois) | 615.60 mi (990.71 km) |
| Rockville to Waukee (Iowa) | 896.60 mi (1,442.94 km) |
| Rockville to Waukegan (Illinois) | 604.77 mi (973.28 km) |
| Rockville to Waukesha (Wisconsin) | 637.73 mi (1,026.33 km) |
| Rockville to Waunakee (Wisconsin) | 698.56 mi (1,124.22 km) |
| Rockville to Waupun (Wisconsin) | 677.07 mi (1,089.64 km) |
| Rockville to Wausau (Wisconsin) | 757.65 mi (1,219.32 km) |
| Rockville to Wauwatosa (Wisconsin) | 629.16 mi (1,012.54 km) |
| Rockville to Waverly (Iowa) | 837.04 mi (1,347.09 km) |
| Rockville to Waverly (Michigan) | 464.89 mi (748.16 km) |
| Rockville to Waxahachie (Texas) | 1,193.53 mi (1,920.81 km) |
| Rockville to Waxhaw (North Carolina) | 348.22 mi (560.40 km) |
| Rockville to Waycross (Georgia) | 617.99 mi (994.56 km) |
