| Erith to Oswego (Illinois) | 3,996.03 mi (6,430.99 km) |
| Erith to Oswego (New York) | 3,457.40 mi (5,564.15 km) |
| Erith to Otsego (Minnesota) | 4,022.13 mi (6,472.99 km) |
| Erith to Ottawa (Illinois) | 4,029.98 mi (6,485.63 km) |
| Erith to Ottawa (Kansas) | 4,406.16 mi (7,091.02 km) |
| Erith to Ottumwa (Iowa) | 4,181.12 mi (6,728.86 km) |
| Erith to Overland (Missouri) | 4,216.05 mi (6,785.07 km) |
| Erith to Overland Park (Kansas) | 4,370.31 mi (7,033.33 km) |
| Erith to Overlea (Maryland) | 3,636.00 mi (5,851.58 km) |
| Erith to Oviedo (Florida) | 4,338.29 mi (6,981.81 km) |
| Erith to Owasso (Oklahoma) | 4,543.83 mi (7,312.59 km) |
| Erith to Owatonna (Minnesota) | 4,063.78 mi (6,540.02 km) |
| Erith to Owensboro (Kentucky) | 4,135.02 mi (6,654.68 km) |
| Erith to Owings Mills (Maryland) | 3,645.03 mi (5,866.12 km) |
| Erith to Owosso (Michigan) | 3,776.97 mi (6,078.44 km) |
