| Oostkamp to Oswego (Illinois) | 4,122.32 mi (6,634.23 km) |
| Oostkamp to Oswego (New York) | 3,587.25 mi (5,773.13 km) |
| Oostkamp to Otsego (Minnesota) | 4,142.95 mi (6,667.43 km) |
| Oostkamp to Ottawa (Illinois) | 4,156.26 mi (6,688.85 km) |
| Oostkamp to Ottawa (Kansas) | 4,531.01 mi (7,291.96 km) |
| Oostkamp to Ottumwa (Iowa) | 4,305.85 mi (6,929.60 km) |
| Oostkamp to Overland (Missouri) | 4,343.26 mi (6,989.80 km) |
| Oostkamp to Overland Park (Kansas) | 4,495.28 mi (7,234.45 km) |
| Oostkamp to Overlea (Maryland) | 3,767.82 mi (6,063.72 km) |
| Oostkamp to Oviedo (Florida) | 4,471.86 mi (7,196.77 km) |
| Oostkamp to Owasso (Oklahoma) | 4,669.81 mi (7,515.33 km) |
| Oostkamp to Owatonna (Minnesota) | 4,185.79 mi (6,736.37 km) |
| Oostkamp to Owensboro (Kentucky) | 4,264.13 mi (6,862.46 km) |
| Oostkamp to Owings Mills (Maryland) | 3,776.76 mi (6,078.12 km) |
| Oostkamp to Owosso (Michigan) | 3,904.22 mi (6,283.24 km) |
