| Green Bay to Oswego (Illinois) | 196.42 mi (316.10 km) |
| Green Bay to Oswego (New York) | 575.40 mi (926.01 km) |
| Green Bay to Otsego (Minnesota) | 280.40 mi (451.26 km) |
| Green Bay to Ottawa (Illinois) | 222.35 mi (357.83 km) |
| Green Bay to Ottawa (Kansas) | 554.95 mi (893.11 km) |
| Green Bay to Ottumwa (Iowa) | 329.74 mi (530.66 km) |
| Green Bay to Overland (Missouri) | 420.32 mi (676.44 km) |
| Green Bay to Overland Park (Kansas) | 519.80 mi (836.53 km) |
| Green Bay to Overlea (Maryland) | 687.72 mi (1,106.78 km) |
| Green Bay to Oviedo (Florida) | 1,157.70 mi (1,863.14 km) |
| Green Bay to Owasso (Oklahoma) | 701.65 mi (1,129.19 km) |
| Green Bay to Owatonna (Minnesota) | 260.79 mi (419.70 km) |
| Green Bay to Owensboro (Kentucky) | 469.08 mi (754.91 km) |
| Green Bay to Owings Mills (Maryland) | 673.87 mi (1,084.49 km) |
| Green Bay to Owosso (Michigan) | 217.31 mi (349.73 km) |
