| Elk Plain to Oswego (Illinois) | 1,706.91 mi (2,747.00 km) |
| Elk Plain to Oswego (New York) | 2,212.73 mi (3,561.04 km) |
| Elk Plain to Otsego (Minnesota) | 1,373.53 mi (2,210.49 km) |
| Elk Plain to Ottawa (Illinois) | 1,693.28 mi (2,725.07 km) |
| Elk Plain to Ottawa (Kansas) | 1,482.65 mi (2,386.10 km) |
| Elk Plain to Ottumwa (Iowa) | 1,534.28 mi (2,469.19 km) |
| Elk Plain to Overland (Missouri) | 1,705.67 mi (2,745.02 km) |
| Elk Plain to Overland Park (Kansas) | 1,498.77 mi (2,412.04 km) |
| Elk Plain to Overlea (Maryland) | 2,334.09 mi (3,756.35 km) |
| Elk Plain to Oviedo (Florida) | 2,540.49 mi (4,088.53 km) |
| Elk Plain to Owasso (Oklahoma) | 1,547.41 mi (2,490.32 km) |
| Elk Plain to Owatonna (Minnesota) | 1,415.57 mi (2,278.15 km) |
| Elk Plain to Owensboro (Kentucky) | 1,890.57 mi (3,042.58 km) |
| Elk Plain to Owings Mills (Maryland) | 2,319.67 mi (3,733.15 km) |
| Elk Plain to Owosso (Michigan) | 1,867.10 mi (3,004.81 km) |
