| Oro Valley to Oakleaf Plantation (Florida) | 1,722.33 mi (2,771.82 km) |
| Oro Valley to Oakley (California) | 716.45 mi (1,153.01 km) |
| Oro Valley to Oakton (Virginia) | 1,930.97 mi (3,107.59 km) |
| Oro Valley to Oakville (Missouri) | 1,231.92 mi (1,982.58 km) |
| Oro Valley to Oatfield (Oregon) | 1,091.01 mi (1,755.82 km) |
| Oro Valley to Ocala (Florida) | 1,720.13 mi (2,768.28 km) |
| Oro Valley to Ocean Acres (New Jersey) | 2,094.99 mi (3,371.56 km) |
| Oro Valley to Ocean City (New Jersey) | 2,076.70 mi (3,342.12 km) |
| Oro Valley to Ocean Pines (Maryland) | 2,046.06 mi (3,292.82 km) |
| Oro Valley to Ocean Pointe (Hawaii) | 2,974.96 mi (4,787.74 km) |
| Oro Valley to Ocean Springs (Mississippi) | 1,313.47 mi (2,113.83 km) |
| Oro Valley to Oceanside (California) | 371.74 mi (598.26 km) |
| Oro Valley to Oceanside (New York) | 2,132.00 mi (3,431.13 km) |
| Oro Valley to Ocoee (Florida) | 1,767.16 mi (2,843.96 km) |
| Oro Valley to Oconomowoc (Wisconsin) | 1,425.81 mi (2,294.62 km) |
