| Rockville to Storm Lake (Iowa) | 972.15 mi (1,564.52 km) |
| Rockville to Storrs (Connecticut) | 319.18 mi (513.68 km) |
| Rockville to Stoughton (Wisconsin) | 682.06 mi (1,097.66 km) |
| Rockville to Stow (Ohio) | 268.31 mi (431.80 km) |
| Rockville to Streamwood (Illinois) | 612.68 mi (986.01 km) |
| Rockville to Streator (Illinois) | 632.35 mi (1,017.67 km) |
| Rockville to Streetsboro (Ohio) | 266.69 mi (429.20 km) |
| Rockville to Strongsville (Ohio) | 290.84 mi (468.06 km) |
| Rockville to Stuart (Florida) | 840.41 mi (1,352.51 km) |
| Rockville to Stuarts Draft (Virginia) | 125.42 mi (201.84 km) |
| Rockville to Sturgis (Michigan) | 473.03 mi (761.27 km) |
| Rockville to Suamico (Wisconsin) | 679.16 mi (1,093.00 km) |
| Rockville to Sudley (Virginia) | 27.43 mi (44.15 km) |
| Rockville to Suffern (New York) | 212.20 mi (341.51 km) |
| Rockville to Suffolk (Virginia) | 167.38 mi (269.37 km) |
