| Elk River to Oswego (Illinois) | 363.46 mi (584.94 km) |
| Elk River to Oswego (New York) | 850.91 mi (1,369.41 km) |
| Elk River to Otsego (Minnesota) | 5.20 mi (8.37 km) |
| Elk River to Ottawa (Illinois) | 363.48 mi (584.96 km) |
| Elk River to Ottawa (Kansas) | 473.19 mi (761.52 km) |
| Elk River to Ottumwa (Iowa) | 303.48 mi (488.41 km) |
| Elk River to Overland (Missouri) | 486.82 mi (783.46 km) |
| Elk River to Overland Park (Kansas) | 448.94 mi (722.49 km) |
| Elk River to Overlea (Maryland) | 960.75 mi (1,546.18 km) |
| Elk River to Oviedo (Florida) | 1,335.76 mi (2,149.70 km) |
| Elk River to Owasso (Oklahoma) | 635.90 mi (1,023.38 km) |
| Elk River to Owatonna (Minnesota) | 87.26 mi (140.43 km) |
| Elk River to Owensboro (Kentucky) | 620.08 mi (997.92 km) |
| Elk River to Owings Mills (Maryland) | 946.53 mi (1,523.30 km) |
| Elk River to Owosso (Michigan) | 492.29 mi (792.27 km) |
