| Rockville to Stephenville (Texas) | 1,270.58 mi (2,044.80 km) |
| Rockville to Sterling (Colorado) | 1,380.12 mi (2,221.09 km) |
| Rockville to Sterling (Illinois) | 684.89 mi (1,102.23 km) |
| Rockville to Sterling (Virginia) | 14.45 mi (23.25 km) |
| Rockville to Sterling Heights (Michigan) | 390.64 mi (628.68 km) |
| Rockville to Steubenville (Ohio) | 205.82 mi (331.24 km) |
| Rockville to Stevens Point (Wisconsin) | 739.69 mi (1,190.42 km) |
| Rockville to Stevenson Ranch (California) | 2,297.01 mi (3,696.68 km) |
| Rockville to Stillwater (Minnesota) | 901.65 mi (1,451.07 km) |
| Rockville to Stillwater (Oklahoma) | 1,106.84 mi (1,781.29 km) |
| Rockville to Stockbridge (Georgia) | 549.76 mi (884.76 km) |
| Rockville to Stockton (California) | 2,364.06 mi (3,804.58 km) |
| Rockville to Stone Ridge (Virginia) | 23.99 mi (38.60 km) |
| Rockville to Stonecrest (Georgia) | 538.17 mi (866.11 km) |
| Rockville to Stony Brook (New York) | 247.57 mi (398.42 km) |
