| Harborne to Oswego (Illinois) | 3,884.53 mi (6,251.55 km) |
| Harborne to Oswego (New York) | 3,348.15 mi (5,388.33 km) |
| Harborne to Otsego (Minnesota) | 3,909.25 mi (6,291.32 km) |
| Harborne to Ottawa (Illinois) | 3,918.48 mi (6,306.18 km) |
| Harborne to Ottawa (Kansas) | 4,294.13 mi (6,910.73 km) |
| Harborne to Ottumwa (Iowa) | 4,069.05 mi (6,548.50 km) |
| Harborne to Overland (Missouri) | 4,104.99 mi (6,606.34 km) |
| Harborne to Overland Park (Kansas) | 4,258.32 mi (6,853.10 km) |
| Harborne to Overlea (Maryland) | 3,529.11 mi (5,679.56 km) |
| Harborne to Oviedo (Florida) | 4,235.89 mi (6,817.00 km) |
| Harborne to Owasso (Oklahoma) | 4,432.21 mi (7,132.96 km) |
| Harborne to Owatonna (Minnesota) | 3,951.06 mi (6,358.62 km) |
| Harborne to Owensboro (Kentucky) | 4,025.16 mi (6,477.87 km) |
| Harborne to Owings Mills (Maryland) | 3,538.01 mi (5,693.87 km) |
| Harborne to Owosso (Michigan) | 3,665.92 mi (5,899.73 km) |
