| Rio Rico to Oskaloosa (Iowa) | 1,220.52 mi (1,964.24 km) |
| Rio Rico to Oswego (Illinois) | 1,433.92 mi (2,307.68 km) |
| Rio Rico to Oswego (New York) | 2,045.01 mi (3,291.13 km) |
| Rio Rico to Otsego (Minnesota) | 1,332.37 mi (2,144.25 km) |
| Rio Rico to Ottawa (Illinois) | 1,401.98 mi (2,256.28 km) |
| Rio Rico to Ottawa (Kansas) | 1,013.87 mi (1,631.66 km) |
| Rio Rico to Ottumwa (Iowa) | 1,222.16 mi (1,966.88 km) |
| Rio Rico to Overland (Missouri) | 1,263.71 mi (2,033.74 km) |
| Rio Rico to Overland Park (Kansas) | 1,050.35 mi (1,690.37 km) |
| Rio Rico to Overlea (Maryland) | 2,001.97 mi (3,221.86 km) |
| Rio Rico to Oviedo (Florida) | 1,787.10 mi (2,876.06 km) |
| Rio Rico to Owasso (Oklahoma) | 928.96 mi (1,495.01 km) |
| Rio Rico to Owatonna (Minnesota) | 1,297.64 mi (2,088.35 km) |
| Rio Rico to Owensboro (Kentucky) | 1,419.87 mi (2,285.06 km) |
| Rio Rico to Owings Mills (Maryland) | 1,987.70 mi (3,198.89 km) |
