| Borehamwood to Oswego (Illinois) | 3,973.20 mi (6,394.25 km) |
| Borehamwood to Oswego (New York) | 3,434.83 mi (5,527.82 km) |
| Borehamwood to Otsego (Minnesota) | 3,999.24 mi (6,436.15 km) |
| Borehamwood to Ottawa (Illinois) | 4,007.15 mi (6,448.89 km) |
| Borehamwood to Ottawa (Kansas) | 4,383.28 mi (7,054.21 km) |
| Borehamwood to Ottumwa (Iowa) | 4,158.24 mi (6,692.04 km) |
| Borehamwood to Overland (Missouri) | 4,193.26 mi (6,748.40 km) |
| Borehamwood to Overland Park (Kansas) | 4,347.43 mi (6,996.52 km) |
| Borehamwood to Overlea (Maryland) | 3,613.77 mi (5,815.79 km) |
| Borehamwood to Oviedo (Florida) | 4,316.76 mi (6,947.16 km) |
| Borehamwood to Owasso (Oklahoma) | 4,520.99 mi (7,275.83 km) |
| Borehamwood to Owatonna (Minnesota) | 4,040.87 mi (6,503.16 km) |
| Borehamwood to Owensboro (Kentucky) | 4,112.38 mi (6,618.23 km) |
| Borehamwood to Owings Mills (Maryland) | 3,622.78 mi (5,830.30 km) |
| Borehamwood to Owosso (Michigan) | 3,754.18 mi (6,041.77 km) |
