| McPherson to Oswego (Illinois) | 543.37 mi (874.47 km) |
| McPherson to Oswego (New York) | 1,155.58 mi (1,859.73 km) |
| McPherson to Otsego (Minnesota) | 519.64 mi (836.28 km) |
| McPherson to Ottawa (Illinois) | 511.56 mi (823.28 km) |
| McPherson to Ottawa (Kansas) | 130.59 mi (210.16 km) |
| McPherson to Ottumwa (Iowa) | 333.28 mi (536.36 km) |
| McPherson to Overland (Missouri) | 394.63 mi (635.09 km) |
| McPherson to Overland Park (Kansas) | 164.39 mi (264.57 km) |
| McPherson to Overlea (Maryland) | 1,136.87 mi (1,829.62 km) |
| McPherson to Oviedo (Florida) | 1,159.33 mi (1,865.76 km) |
| McPherson to Owasso (Oklahoma) | 175.57 mi (282.55 km) |
| McPherson to Owatonna (Minnesota) | 457.16 mi (735.73 km) |
| McPherson to Owensboro (Kentucky) | 574.79 mi (925.03 km) |
| McPherson to Owings Mills (Maryland) | 1,122.10 mi (1,805.84 km) |
| McPherson to Owosso (Michigan) | 774.21 mi (1,245.96 km) |
