| Rockville to Spout Springs (North Carolina) | 282.86 mi (455.22 km) |
| Rockville to Spring (Texas) | 1,206.50 mi (1,941.67 km) |
| Rockville to Spring Creek (Nevada) | 2,024.20 mi (3,257.64 km) |
| Rockville to Spring Hill (Florida) | 794.59 mi (1,278.76 km) |
| Rockville to Spring Hill (Tennessee) | 582.61 mi (937.62 km) |
| Rockville to Spring Lake (North Carolina) | 287.83 mi (463.22 km) |
| Rockville to Spring Valley (California) | 2,252.82 mi (3,625.56 km) |
| Rockville to Spring Valley (Nevada) | 2,081.34 mi (3,349.59 km) |
| Rockville to Spring Valley (New York) | 215.99 mi (347.61 km) |
| Rockville to Springboro (Ohio) | 379.74 mi (611.13 km) |
| Rockville to Springdale (Arkansas) | 949.98 mi (1,528.85 km) |
| Rockville to Springdale (New Jersey) | 128.67 mi (207.08 km) |
| Rockville to Springdale (Ohio) | 392.20 mi (631.19 km) |
| Rockville to Springfield (Illinois) | 668.20 mi (1,075.36 km) |
| Rockville to Springfield (Massachusetts) | 320.11 mi (515.16 km) |
