| Grass Valley to Ukiah (California) | 115.71 mi (186.21 km) |
| Grass Valley to Union (Missouri) | 1,611.36 mi (2,593.23 km) |
| Grass Valley to Union City (California) | 123.58 mi (198.88 km) |
| Grass Valley to Union City (Georgia) | 2,051.69 mi (3,301.88 km) |
| Grass Valley to Union City (New Jersey) | 2,461.01 mi (3,960.62 km) |
| Grass Valley to Union City (Tennessee) | 1,748.21 mi (2,813.48 km) |
| Grass Valley to Union Hill-Novelty Hill (Washington) | 586.22 mi (943.43 km) |
| Grass Valley to Union Park (Florida) | 2,377.84 mi (3,826.77 km) |
| Grass Valley to Uniondale (New York) | 2,484.09 mi (3,997.76 km) |
| Grass Valley to Universal City (Texas) | 1,453.16 mi (2,338.63 km) |
| Grass Valley to University (Florida) | 2,330.52 mi (3,750.62 km) |
| Grass Valley to University City (Missouri) | 1,643.35 mi (2,644.71 km) |
| Grass Valley to University Heights (Ohio) | 2,068.33 mi (3,328.66 km) |
| Grass Valley to University of California-Santa Barbara (California) | 338.75 mi (545.17 km) |
| Grass Valley to University Park (Texas) | 1,419.99 mi (2,285.26 km) |
