| Rockville to Sumter (South Carolina) | 398.24 mi (640.91 km) |
| Rockville to Sun City (Arizona) | 1,978.17 mi (3,183.56 km) |
| Rockville to Sun City Center (Florida) | 840.42 mi (1,352.52 km) |
| Rockville to Sun City West (Arizona) | 1,980.89 mi (3,187.94 km) |
| Rockville to Sun Lakes (Arizona) | 1,966.20 mi (3,164.30 km) |
| Rockville to Sun Prairie (Wisconsin) | 688.68 mi (1,108.32 km) |
| Rockville to Sun Valley (Nevada) | 2,255.84 mi (3,630.43 km) |
| Rockville to Sun Village (California) | 2,259.14 mi (3,635.74 km) |
| Rockville to Sunland Park (New Mexico) | 1,722.68 mi (2,772.39 km) |
| Rockville to Sunny Isles Beach (Florida) | 924.40 mi (1,487.67 km) |
| Rockville to Sunnyside (Washington) | 2,204.11 mi (3,547.17 km) |
| Rockville to Sunnyvale (California) | 2,413.13 mi (3,883.56 km) |
| Rockville to Sunrise (Florida) | 911.66 mi (1,467.18 km) |
| Rockville to Sunrise Manor (Nevada) | 2,068.18 mi (3,328.42 km) |
| Rockville to Sunset (Florida) | 942.74 mi (1,517.19 km) |
