| Napa to Ukiah (California) | 76.44 mi (123.03 km) |
| Napa to Union (Missouri) | 1,687.77 mi (2,716.21 km) |
| Napa to Union City (California) | 50.39 mi (81.09 km) |
| Napa to Union City (Georgia) | 2,120.91 mi (3,413.28 km) |
| Napa to Union City (New Jersey) | 2,545.27 mi (4,096.22 km) |
| Napa to Union City (Tennessee) | 1,820.91 mi (2,930.47 km) |
| Napa to Union Hill-Novelty Hill (Washington) | 648.33 mi (1,043.39 km) |
| Napa to Union Park (Florida) | 2,439.79 mi (3,926.46 km) |
| Napa to Uniondale (New York) | 2,568.38 mi (4,133.41 km) |
| Napa to Universal City (Texas) | 1,496.66 mi (2,408.63 km) |
| Napa to University (Florida) | 2,390.47 mi (3,847.09 km) |
| Napa to University City (Missouri) | 1,720.47 mi (2,768.82 km) |
| Napa to University Heights (Ohio) | 2,152.18 mi (3,463.60 km) |
| Napa to University of California-Santa Barbara (California) | 300.72 mi (483.97 km) |
| Napa to University Park (Texas) | 1,476.79 mi (2,376.66 km) |
