| Rockville to San Diego (California) | 2,257.97 mi (3,633.86 km) |
| Rockville to San Diego Country Estates (California) | 2,235.33 mi (3,597.41 km) |
| Rockville to San Dimas (California) | 2,262.19 mi (3,640.64 km) |
| Rockville to San Fernando (California) | 2,291.32 mi (3,687.53 km) |
| Rockville to San Francisco (California) | 2,427.71 mi (3,907.02 km) |
| Rockville to San Gabriel (California) | 2,278.03 mi (3,666.13 km) |
| Rockville to San Germán (Puerto Rico) | 1,572.70 mi (2,531.02 km) |
| Rockville to San Jacinto (California) | 2,226.13 mi (3,582.61 km) |
| Rockville to San Jose (California) | 2,405.47 mi (3,871.23 km) |
| Rockville to San Juan (Puerto Rico) | 1,576.25 mi (2,536.74 km) |
| Rockville to San Juan (Texas) | 1,505.67 mi (2,423.14 km) |
| Rockville to San Juan Capistrano (California) | 2,269.09 mi (3,651.75 km) |
| Rockville to San Leandro (California) | 2,413.73 mi (3,884.53 km) |
| Rockville to San Lorenzo (California) | 2,413.01 mi (3,883.36 km) |
| Rockville to San Luis (Arizona) | 2,137.66 mi (3,440.23 km) |
