| Houston to Ukiah (California) | 1,703.09 mi (2,740.87 km) |
| Houston to Union (Missouri) | 648.42 mi (1,043.54 km) |
| Houston to Union City (California) | 1,616.63 mi (2,601.72 km) |
| Houston to Union City (Georgia) | 688.23 mi (1,107.59 km) |
| Houston to Union City (New Jersey) | 1,417.74 mi (2,281.64 km) |
| Houston to Union City (Tennessee) | 587.22 mi (945.04 km) |
| Houston to Union Hill-Novelty Hill (Washington) | 1,877.74 mi (3,021.93 km) |
| Houston to Union Park (Florida) | 857.42 mi (1,379.88 km) |
| Houston to Uniondale (New York) | 1,437.00 mi (2,312.62 km) |
| Houston to Universal City (Texas) | 175.98 mi (283.20 km) |
| Houston to University (Florida) | 791.80 mi (1,274.28 km) |
| Houston to University City (Missouri) | 677.84 mi (1,090.87 km) |
| Houston to University Heights (Ohio) | 1,119.48 mi (1,801.62 km) |
| Houston to University of California-Santa Barbara (California) | 1,463.54 mi (2,355.34 km) |
| Houston to University Park (Texas) | 227.40 mi (365.97 km) |
