| Leczna to Oswego (Illinois) | 4,802.94 mi (7,729.59 km) |
| Leczna to Oswego (New York) | 4,313.96 mi (6,942.65 km) |
| Leczna to Otsego (Minnesota) | 4,768.88 mi (7,674.77 km) |
| Leczna to Ottawa (Illinois) | 4,836.40 mi (7,783.44 km) |
| Leczna to Ottawa (Kansas) | 5,191.99 mi (8,355.69 km) |
| Leczna to Ottumwa (Iowa) | 4,968.15 mi (7,995.47 km) |
| Leczna to Overland (Missouri) | 5,031.78 mi (8,097.86 km) |
| Leczna to Overland Park (Kansas) | 5,157.91 mi (8,300.86 km) |
| Leczna to Overlea (Maryland) | 4,519.80 mi (7,273.91 km) |
| Leczna to Oviedo (Florida) | 5,255.28 mi (8,457.56 km) |
| Leczna to Owasso (Oklahoma) | 5,341.27 mi (8,595.95 km) |
| Leczna to Owatonna (Minnesota) | 4,822.45 mi (7,760.99 km) |
| Leczna to Owensboro (Kentucky) | 4,975.62 mi (8,007.48 km) |
| Leczna to Owings Mills (Maryland) | 4,527.31 mi (7,286.00 km) |
| Leczna to Owosso (Michigan) | 4,597.72 mi (7,399.31 km) |
