| Fort William to Oswego (Illinois) | 3,647.36 mi (5,869.86 km) |
| Fort William to Oswego (New York) | 3,135.68 mi (5,046.40 km) |
| Fort William to Otsego (Minnesota) | 3,648.42 mi (5,871.57 km) |
| Fort William to Ottawa (Illinois) | 3,681.17 mi (5,924.27 km) |
| Fort William to Ottawa (Kansas) | 4,049.05 mi (6,516.31 km) |
| Fort William to Ottumwa (Iowa) | 3,823.84 mi (6,153.88 km) |
| Fort William to Overland (Missouri) | 3,872.40 mi (6,232.02 km) |
| Fort William to Overland Park (Kansas) | 4,013.86 mi (6,459.68 km) |
| Fort William to Overlea (Maryland) | 3,334.69 mi (5,366.66 km) |
| Fort William to Oviedo (Florida) | 4,067.91 mi (6,546.67 km) |
| Fort William to Owasso (Oklahoma) | 4,192.27 mi (6,746.81 km) |
| Fort William to Owatonna (Minnesota) | 3,694.59 mi (5,945.87 km) |
| Fort William to Owensboro (Kentucky) | 3,804.79 mi (6,123.22 km) |
| Fort William to Owings Mills (Maryland) | 3,342.50 mi (5,379.23 km) |
| Fort William to Owosso (Michigan) | 3,434.69 mi (5,527.60 km) |
