| Dour to Oswego (Illinois) | 4,169.36 mi (6,709.94 km) |
| Dour to Oswego (New York) | 3,631.11 mi (5,843.70 km) |
| Dour to Otsego (Minnesota) | 4,193.19 mi (6,748.29 km) |
| Dour to Ottawa (Illinois) | 4,203.31 mi (6,764.57 km) |
| Dour to Ottawa (Kansas) | 4,579.04 mi (7,369.25 km) |
| Dour to Ottumwa (Iowa) | 4,353.95 mi (7,007.01 km) |
| Dour to Overland (Missouri) | 4,389.59 mi (7,064.37 km) |
| Dour to Overland Park (Kansas) | 4,543.23 mi (7,311.62 km) |
| Dour to Overlea (Maryland) | 3,809.03 mi (6,130.04 km) |
| Dour to Oviedo (Florida) | 4,508.70 mi (7,256.06 km) |
| Dour to Owasso (Oklahoma) | 4,717.08 mi (7,591.41 km) |
| Dour to Owatonna (Minnesota) | 4,235.45 mi (6,816.29 km) |
| Dour to Owensboro (Kentucky) | 4,308.77 mi (6,934.30 km) |
| Dour to Owings Mills (Maryland) | 3,818.12 mi (6,144.67 km) |
| Dour to Owosso (Michigan) | 3,950.52 mi (6,357.74 km) |
