| Rockville to University Place (Washington) | 2,321.22 mi (3,735.64 km) |
| Rockville to Upland (California) | 2,254.01 mi (3,627.47 km) |
| Rockville to Upper Arlington (Ohio) | 321.72 mi (517.75 km) |
| Rockville to Upper Grand Lagoon (Florida) | 785.06 mi (1,263.43 km) |
| Rockville to Upper Montclair (New Jersey) | 198.14 mi (318.88 km) |
| Rockville to Urbana (Illinois) | 591.75 mi (952.33 km) |
| Rockville to Urbana (Maryland) | 19.61 mi (31.56 km) |
| Rockville to Urbana (Ohio) | 358.30 mi (576.63 km) |
| Rockville to Urbandale (Iowa) | 891.45 mi (1,434.65 km) |
| Rockville to Utica (New York) | 294.87 mi (474.55 km) |
| Rockville to Uvalde (Texas) | 1,456.52 mi (2,344.04 km) |
| Rockville to Vacaville (California) | 2,391.20 mi (3,848.27 km) |
| Rockville to Vadnais Heights (Minnesota) | 912.70 mi (1,468.85 km) |
| Rockville to Vail (Arizona) | 1,935.46 mi (3,114.82 km) |
| Rockville to Valdosta (Georgia) | 665.78 mi (1,071.47 km) |
