| Oslo to Oswego (Illinois) | 4,070.42 mi (6,550.70 km) |
| Oslo to Oswego (New York) | 3,608.17 mi (5,806.78 km) |
| Oslo to Otsego (Minnesota) | 4,020.23 mi (6,469.94 km) |
| Oslo to Ottawa (Illinois) | 4,103.51 mi (6,603.95 km) |
| Oslo to Ottawa (Kansas) | 4,450.82 mi (7,162.89 km) |
| Oslo to Ottumwa (Iowa) | 4,228.33 mi (6,804.85 km) |
| Oslo to Overland (Missouri) | 4,301.19 mi (6,922.10 km) |
| Oslo to Overland Park (Kansas) | 4,417.39 mi (7,109.11 km) |
| Oslo to Overlea (Maryland) | 3,830.16 mi (6,164.05 km) |
| Oslo to Oviedo (Florida) | 4,588.52 mi (7,384.52 km) |
| Oslo to Owasso (Oklahoma) | 4,602.85 mi (7,407.56 km) |
| Oslo to Owatonna (Minnesota) | 4,076.07 mi (6,559.80 km) |
| Oslo to Owensboro (Kentucky) | 4,256.04 mi (6,849.44 km) |
| Oslo to Owings Mills (Maryland) | 3,836.45 mi (6,174.18 km) |
| Oslo to Owosso (Michigan) | 3,871.83 mi (6,231.11 km) |
