| Opovo to Oswego (Illinois) | 5,008.40 mi (8,060.24 km) |
| Opovo to Oswego (New York) | 4,481.27 mi (7,211.91 km) |
| Opovo to Otsego (Minnesota) | 5,011.64 mi (8,065.46 km) |
| Opovo to Ottawa (Illinois) | 5,042.28 mi (8,114.77 km) |
| Opovo to Ottawa (Kansas) | 5,412.52 mi (8,710.61 km) |
| Opovo to Ottumwa (Iowa) | 5,187.27 mi (8,348.10 km) |
| Opovo to Overland (Missouri) | 5,231.62 mi (8,419.48 km) |
| Opovo to Overland Park (Kansas) | 5,377.20 mi (8,653.77 km) |
| Opovo to Overlea (Maryland) | 4,663.23 mi (7,504.74 km) |
| Opovo to Oviedo (Florida) | 5,362.26 mi (8,629.72 km) |
| Opovo to Owasso (Oklahoma) | 5,554.53 mi (8,939.15 km) |
| Opovo to Owatonna (Minnesota) | 5,058.53 mi (8,140.92 km) |
| Opovo to Owensboro (Kentucky) | 5,156.76 mi (8,299.01 km) |
| Opovo to Owings Mills (Maryland) | 4,672.19 mi (7,519.16 km) |
| Opovo to Owosso (Michigan) | 4,792.97 mi (7,713.54 km) |
