| Manzanares el Real to Oswego (Illinois) | 4,198.54 mi (6,756.89 km) |
| Manzanares el Real to Oswego (New York) | 3,606.82 mi (5,804.61 km) |
| Manzanares el Real to Otsego (Minnesota) | 4,300.51 mi (6,921.00 km) |
| Manzanares el Real to Ottawa (Illinois) | 4,231.81 mi (6,810.45 km) |
| Manzanares el Real to Ottawa (Kansas) | 4,621.40 mi (7,437.43 km) |
| Manzanares el Real to Ottumwa (Iowa) | 4,403.27 mi (7,086.38 km) |
| Manzanares el Real to Overland (Missouri) | 4,397.40 mi (7,076.93 km) |
| Manzanares el Real to Overland Park (Kansas) | 4,584.54 mi (7,378.11 km) |
| Manzanares el Real to Overlea (Maryland) | 3,727.65 mi (5,999.08 km) |
| Manzanares el Real to Oviedo (Florida) | 4,331.45 mi (6,970.80 km) |
| Manzanares el Real to Owasso (Oklahoma) | 4,738.62 mi (7,626.08 km) |
| Manzanares el Real to Owatonna (Minnesota) | 4,326.28 mi (6,962.48 km) |
| Manzanares el Real to Owensboro (Kentucky) | 4,281.99 mi (6,891.19 km) |
| Manzanares el Real to Owings Mills (Maryland) | 3,739.27 mi (6,017.77 km) |
| Manzanares el Real to Owosso (Michigan) | 3,968.70 mi (6,387.01 km) |
