| Koekelberg to Oswego (Illinois) | 4,173.53 mi (6,716.65 km) |
| Koekelberg to Oswego (New York) | 3,638.90 mi (5,856.25 km) |
| Koekelberg to Otsego (Minnesota) | 4,193.13 mi (6,748.19 km) |
| Koekelberg to Ottawa (Illinois) | 4,207.47 mi (6,771.27 km) |
| Koekelberg to Ottawa (Kansas) | 4,581.98 mi (7,373.98 km) |
| Koekelberg to Ottumwa (Iowa) | 4,356.80 mi (7,011.60 km) |
| Koekelberg to Overland (Missouri) | 4,394.61 mi (7,072.44 km) |
| Koekelberg to Overland Park (Kansas) | 4,546.27 mi (7,316.51 km) |
| Koekelberg to Overlea (Maryland) | 3,819.51 mi (6,146.91 km) |
| Koekelberg to Oviedo (Florida) | 4,523.17 mi (7,279.34 km) |
| Koekelberg to Owasso (Oklahoma) | 4,720.96 mi (7,597.65 km) |
| Koekelberg to Owatonna (Minnesota) | 4,236.22 mi (6,817.53 km) |
| Koekelberg to Owensboro (Kentucky) | 4,315.72 mi (6,945.48 km) |
| Koekelberg to Owings Mills (Maryland) | 3,828.46 mi (6,161.31 km) |
| Koekelberg to Owosso (Michigan) | 3,955.58 mi (6,365.89 km) |
