| Karhula to Oswego (Illinois) | 4,493.95 mi (7,232.31 km) |
| Karhula to Oswego (New York) | 4,073.68 mi (6,555.96 km) |
| Karhula to Otsego (Minnesota) | 4,404.76 mi (7,088.78 km) |
| Karhula to Ottawa (Illinois) | 4,526.08 mi (7,284.02 km) |
| Karhula to Ottawa (Kansas) | 4,853.01 mi (7,810.16 km) |
| Karhula to Ottumwa (Iowa) | 4,635.50 mi (7,460.11 km) |
| Karhula to Overland (Missouri) | 4,726.44 mi (7,606.47 km) |
| Karhula to Overland Park (Kansas) | 4,821.40 mi (7,759.30 km) |
| Karhula to Overlea (Maryland) | 4,310.16 mi (6,936.54 km) |
| Karhula to Oviedo (Florida) | 5,082.02 mi (8,178.72 km) |
| Karhula to Owasso (Oklahoma) | 5,010.22 mi (8,063.18 km) |
| Karhula to Owatonna (Minnesota) | 4,467.32 mi (7,189.46 km) |
| Karhula to Owensboro (Kentucky) | 4,699.14 mi (7,562.54 km) |
| Karhula to Owings Mills (Maryland) | 4,315.30 mi (6,944.81 km) |
| Karhula to Owosso (Michigan) | 4,308.46 mi (6,933.79 km) |
