| Gaithersburg to Salisbury (New York) | 223.20 mi (359.20 km) |
| Gaithersburg to Salisbury (North Carolina) | 299.62 mi (482.19 km) |
| Gaithersburg to Salmon Creek (Washington) | 2,329.84 mi (3,749.51 km) |
| Gaithersburg to Salt Lake City (Utah) | 1,830.25 mi (2,945.50 km) |
| Gaithersburg to Sammamish (Washington) | 2,292.06 mi (3,688.72 km) |
| Gaithersburg to San Angelo (Texas) | 1,409.10 mi (2,267.72 km) |
| Gaithersburg to San Anselmo (California) | 2,426.02 mi (3,904.29 km) |
| Gaithersburg to San Antonio (Texas) | 1,382.83 mi (2,225.45 km) |
| Gaithersburg to San Benito (Texas) | 1,484.14 mi (2,388.49 km) |
| Gaithersburg to San Bernardino (California) | 2,230.51 mi (3,589.65 km) |
| Gaithersburg to San Bruno (California) | 2,425.79 mi (3,903.94 km) |
| Gaithersburg to San Buenaventura (California) | 2,330.76 mi (3,750.99 km) |
| Gaithersburg to San Carlos (California) | 2,419.78 mi (3,894.25 km) |
| Gaithersburg to San Carlos Park (Florida) | 914.22 mi (1,471.29 km) |
| Gaithersburg to San Clemente (California) | 2,264.75 mi (3,644.76 km) |
