| Rapid City to Ukiah (California) | 1,084.10 mi (1,744.69 km) |
| Rapid City to Union (Missouri) | 743.68 mi (1,196.84 km) |
| Rapid City to Union City (California) | 1,076.22 mi (1,732.01 km) |
| Rapid City to Union City (Georgia) | 1,233.14 mi (1,984.55 km) |
| Rapid City to Union City (New Jersey) | 1,498.13 mi (2,411.01 km) |
| Rapid City to Union City (Tennessee) | 913.14 mi (1,469.56 km) |
| Rapid City to Union Hill-Novelty Hill (Washington) | 935.82 mi (1,506.05 km) |
| Rapid City to Union Park (Florida) | 1,617.15 mi (2,602.56 km) |
| Rapid City to Uniondale (New York) | 1,520.94 mi (2,447.72 km) |
| Rapid City to Universal City (Texas) | 1,038.84 mi (1,671.85 km) |
| Rapid City to University (Florida) | 1,594.01 mi (2,565.31 km) |
| Rapid City to University City (Missouri) | 764.36 mi (1,230.11 km) |
| Rapid City to University Heights (Ohio) | 1,110.64 mi (1,787.40 km) |
| Rapid City to University of California-Santa Barbara (California) | 1,108.95 mi (1,784.68 km) |
| Rapid City to University Park (Texas) | 849.00 mi (1,366.34 km) |
