| Ottawa to Ukiah (California) | 1,807.73 mi (2,909.26 km) |
| Ottawa to Union (Missouri) | 231.87 mi (373.15 km) |
| Ottawa to Union City (California) | 1,777.97 mi (2,861.37 km) |
| Ottawa to Union City (Georgia) | 584.79 mi (941.12 km) |
| Ottawa to Union City (New Jersey) | 770.84 mi (1,240.55 km) |
| Ottawa to Union City (Tennessee) | 340.75 mi (548.39 km) |
| Ottawa to Union Hill-Novelty Hill (Washington) | 1,678.92 mi (2,701.96 km) |
| Ottawa to Union Park (Florida) | 981.66 mi (1,579.84 km) |
| Ottawa to Uniondale (New York) | 794.01 mi (1,277.83 km) |
| Ottawa to Universal City (Texas) | 973.19 mi (1,566.19 km) |
| Ottawa to University (Florida) | 985.92 mi (1,586.68 km) |
| Ottawa to University City (Missouri) | 202.19 mi (325.40 km) |
| Ottawa to University Heights (Ohio) | 377.74 mi (607.92 km) |
| Ottawa to University of California-Santa Barbara (California) | 1,748.33 mi (2,813.66 km) |
| Ottawa to University Park (Texas) | 732.81 mi (1,179.34 km) |
