| Harenkarspel to Oswego (Illinois) | 4,123.96 mi (6,636.87 km) |
| Harenkarspel to Oswego (New York) | 3,600.99 mi (5,795.24 km) |
| Harenkarspel to Otsego (Minnesota) | 4,131.13 mi (6,648.42 km) |
| Harenkarspel to Ottawa (Illinois) | 4,157.84 mi (6,691.39 km) |
| Harenkarspel to Ottawa (Kansas) | 4,528.41 mi (7,287.77 km) |
| Harenkarspel to Ottumwa (Iowa) | 4,303.15 mi (6,925.25 km) |
| Harenkarspel to Overland (Missouri) | 4,347.41 mi (6,996.48 km) |
| Harenkarspel to Overland Park (Kansas) | 4,493.02 mi (7,230.82 km) |
| Harenkarspel to Overlea (Maryland) | 3,790.03 mi (6,099.46 km) |
| Harenkarspel to Oviedo (Florida) | 4,506.32 mi (7,252.22 km) |
| Harenkarspel to Owasso (Oklahoma) | 4,670.10 mi (7,515.79 km) |
| Harenkarspel to Owatonna (Minnesota) | 4,176.59 mi (6,721.57 km) |
| Harenkarspel to Owensboro (Kentucky) | 4,274.52 mi (6,879.17 km) |
| Harenkarspel to Owings Mills (Maryland) | 3,798.50 mi (6,113.09 km) |
| Harenkarspel to Owosso (Michigan) | 3,908.90 mi (6,290.77 km) |
