| Ontario to Ukiah (California) | 470.07 mi (756.51 km) |
| Ontario to Union (Missouri) | 1,508.39 mi (2,427.53 km) |
| Ontario to Union City (California) | 348.80 mi (561.34 km) |
| Ontario to Union City (Georgia) | 1,888.75 mi (3,039.66 km) |
| Ontario to Union City (New Jersey) | 2,411.02 mi (3,880.16 km) |
| Ontario to Union City (Tennessee) | 1,614.28 mi (2,597.93 km) |
| Ontario to Union Hill-Novelty Hill (Washington) | 969.89 mi (1,560.88 km) |
| Ontario to Union Park (Florida) | 2,168.66 mi (3,490.13 km) |
| Ontario to Uniondale (New York) | 2,434.09 mi (3,917.29 km) |
| Ontario to Universal City (Texas) | 1,172.92 mi (1,887.63 km) |
| Ontario to University (Florida) | 2,111.48 mi (3,398.10 km) |
| Ontario to University City (Missouri) | 1,544.99 mi (2,486.43 km) |
| Ontario to University Heights (Ohio) | 2,020.52 mi (3,251.71 km) |
| Ontario to University of California-Santa Barbara (California) | 131.15 mi (211.07 km) |
| Ontario to University Park (Texas) | 1,200.65 mi (1,932.25 km) |
