| Thornton to University Place (Washington) | 4,643.93 mi (7,473.68 km) |
| Thornton to Upland (California) | 5,260.46 mi (8,465.89 km) |
| Thornton to Upper Arlington (Ohio) | 3,730.09 mi (6,003.00 km) |
| Thornton to Upper Grand Lagoon (Florida) | 4,326.82 mi (6,963.35 km) |
| Thornton to Upper Montclair (New Jersey) | 3,348.08 mi (5,388.21 km) |
| Thornton to Urbana (Illinois) | 3,919.51 mi (6,307.85 km) |
| Thornton to Urbana (Maryland) | 3,541.54 mi (5,699.56 km) |
| Thornton to Urbana (Ohio) | 3,752.26 mi (6,038.68 km) |
| Thornton to Urbandale (Iowa) | 4,047.86 mi (6,514.39 km) |
| Thornton to Utica (New York) | 3,286.84 mi (5,289.65 km) |
| Thornton to Uvalde (Texas) | 4,917.61 mi (7,914.13 km) |
| Thornton to Vacaville (California) | 5,143.14 mi (8,277.09 km) |
| Thornton to Vadnais Heights (Minnesota) | 3,854.93 mi (6,203.91 km) |
| Thornton to Vail (Arizona) | 5,152.30 mi (8,291.83 km) |
| Thornton to Valdosta (Georgia) | 4,194.15 mi (6,749.83 km) |
