| Heswall to Oswego (Illinois) | 3,815.40 mi (6,140.29 km) |
| Heswall to Oswego (New York) | 3,282.58 mi (5,282.81 km) |
| Heswall to Otsego (Minnesota) | 3,836.86 mi (6,174.83 km) |
| Heswall to Ottawa (Illinois) | 3,849.34 mi (6,194.91 km) |
| Heswall to Ottawa (Kansas) | 4,223.96 mi (6,797.81 km) |
| Heswall to Ottumwa (Iowa) | 3,998.81 mi (6,435.46 km) |
| Heswall to Overland (Missouri) | 4,036.60 mi (6,496.28 km) |
| Heswall to Overland Park (Kansas) | 4,188.23 mi (6,740.31 km) |
| Heswall to Overlea (Maryland) | 3,466.58 mi (5,578.91 km) |
| Heswall to Oviedo (Florida) | 4,178.31 mi (6,724.34 km) |
| Heswall to Owasso (Oklahoma) | 4,362.82 mi (7,021.29 km) |
| Heswall to Owatonna (Minnesota) | 3,879.25 mi (6,243.06 km) |
| Heswall to Owensboro (Kentucky) | 3,958.63 mi (6,370.79 km) |
| Heswall to Owings Mills (Maryland) | 3,475.29 mi (5,592.94 km) |
| Heswall to Owosso (Michigan) | 3,597.60 mi (5,789.77 km) |
