| Thornton to Ukiah (California) | 5,132.22 mi (8,259.51 km) |
| Thornton to Union (Missouri) | 4,106.43 mi (6,608.67 km) |
| Thornton to Union City (California) | 5,188.89 mi (8,350.71 km) |
| Thornton to Union City (Georgia) | 4,104.98 mi (6,606.33 km) |
| Thornton to Union City (New Jersey) | 3,344.91 mi (5,383.11 km) |
| Thornton to Union City (Tennessee) | 4,134.85 mi (6,654.39 km) |
| Thornton to Union Hill-Novelty Hill (Washington) | 4,603.83 mi (7,409.15 km) |
| Thornton to Union Park (Florida) | 4,230.18 mi (6,807.82 km) |
| Thornton to Uniondale (New York) | 3,329.95 mi (5,359.04 km) |
| Thornton to Universal City (Texas) | 4,844.36 mi (7,796.24 km) |
| Thornton to University (Florida) | 4,303.65 mi (6,926.05 km) |
| Thornton to University City (Missouri) | 4,070.54 mi (6,550.90 km) |
| Thornton to University Heights (Ohio) | 3,602.11 mi (5,797.03 km) |
| Thornton to University of California-Santa Barbara (California) | 5,311.13 mi (8,547.44 km) |
| Thornton to University Park (Texas) | 4,611.24 mi (7,421.08 km) |
