| Mack to Ukiah (California) | 2,048.72 mi (3,297.10 km) |
| Mack to Union (Missouri) | 343.42 mi (552.68 km) |
| Mack to Union City (California) | 2,011.01 mi (3,236.41 km) |
| Mack to Union City (Georgia) | 383.87 mi (617.78 km) |
| Mack to Union City (New Jersey) | 574.47 mi (924.52 km) |
| Mack to Union City (Tennessee) | 303.69 mi (488.75 km) |
| Mack to Union Hill-Novelty Hill (Washington) | 1,943.61 mi (3,127.94 km) |
| Mack to Union Park (Florida) | 757.30 mi (1,218.76 km) |
| Mack to Uniondale (New York) | 596.76 mi (960.39 km) |
| Mack to Universal City (Texas) | 1,019.66 mi (1,640.99 km) |
| Mack to University (Florida) | 775.77 mi (1,248.48 km) |
| Mack to University City (Missouri) | 305.67 mi (491.93 km) |
| Mack to University Heights (Ohio) | 231.70 mi (372.89 km) |
| Mack to University of California-Santa Barbara (California) | 1,961.41 mi (3,156.58 km) |
| Mack to University Park (Texas) | 803.84 mi (1,293.65 km) |
