| Rockville to Richland (Washington) | 2,170.25 mi (3,492.68 km) |
| Rockville to Richmond (California) | 2,418.41 mi (3,892.06 km) |
| Rockville to Richmond (Indiana) | 415.74 mi (669.07 km) |
| Rockville to Richmond (Kentucky) | 397.45 mi (639.63 km) |
| Rockville to Richmond (Texas) | 1,244.14 mi (2,002.26 km) |
| Rockville to Richmond (Virginia) | 108.76 mi (175.03 km) |
| Rockville to Richmond Heights (Florida) | 947.80 mi (1,525.34 km) |
| Rockville to Richmond Heights (Ohio) | 285.78 mi (459.92 km) |
| Rockville to Richmond Hill (Georgia) | 548.42 mi (882.59 km) |
| Rockville to Richmond West (Florida) | 950.11 mi (1,529.05 km) |
| Rockville to Richton Park (Illinois) | 581.49 mi (935.81 km) |
| Rockville to Ridge (New York) | 258.89 mi (416.64 km) |
| Rockville to Ridgecrest (California) | 2,219.00 mi (3,571.14 km) |
| Rockville to Ridgefield (New Jersey) | 205.53 mi (330.76 km) |
| Rockville to Ridgefield (Washington) | 2,335.56 mi (3,758.72 km) |
