| Oro Valley to Orangeburg (South Carolina) | 1,741.06 mi (2,801.97 km) |
| Oro Valley to Orangevale (California) | 719.70 mi (1,158.25 km) |
| Oro Valley to Orchards (Washington) | 1,104.11 mi (1,776.90 km) |
| Oro Valley to Orcutt (California) | 568.75 mi (915.32 km) |
| Oro Valley to Oregon (Ohio) | 1,638.56 mi (2,637.02 km) |
| Oro Valley to Oregon (Wisconsin) | 1,379.65 mi (2,220.32 km) |
| Oro Valley to Oregon City (Oregon) | 1,087.16 mi (1,749.61 km) |
| Oro Valley to Orem (Utah) | 545.75 mi (878.29 km) |
| Oro Valley to Orinda (California) | 735.97 mi (1,184.42 km) |
| Oro Valley to Orland Park (Illinois) | 1,418.32 mi (2,282.57 km) |
| Oro Valley to Orlando (Florida) | 1,780.56 mi (2,865.53 km) |
| Oro Valley to Ormond Beach (Florida) | 1,779.23 mi (2,863.40 km) |
| Oro Valley to Oroville (California) | 767.00 mi (1,234.36 km) |
| Oro Valley to Oshkosh (Wisconsin) | 1,449.54 mi (2,332.80 km) |
| Oro Valley to Oskaloosa (Iowa) | 1,180.94 mi (1,900.54 km) |
