| Hackensack to Oswego (Illinois) | 743.13 mi (1,195.96 km) |
| Hackensack to Oswego (New York) | 217.10 mi (349.39 km) |
| Hackensack to Otsego (Minnesota) | 1,030.12 mi (1,657.81 km) |
| Hackensack to Ottawa (Illinois) | 769.01 mi (1,237.61 km) |
| Hackensack to Ottawa (Kansas) | 1,135.39 mi (1,827.23 km) |
| Hackensack to Ottumwa (Iowa) | 956.97 mi (1,540.09 km) |
| Hackensack to Overland (Missouri) | 878.35 mi (1,413.56 km) |
| Hackensack to Overland Park (Kansas) | 1,100.38 mi (1,770.89 km) |
| Hackensack to Overlea (Maryland) | 167.76 mi (269.98 km) |
| Hackensack to Oviedo (Florida) | 936.39 mi (1,506.97 km) |
| Hackensack to Owasso (Oklahoma) | 1,215.15 mi (1,955.59 km) |
| Hackensack to Owatonna (Minnesota) | 999.70 mi (1,608.86 km) |
| Hackensack to Owensboro (Kentucky) | 730.54 mi (1,175.69 km) |
| Hackensack to Owings Mills (Maryland) | 177.30 mi (285.34 km) |
| Hackensack to Owosso (Michigan) | 540.17 mi (869.32 km) |
