| Red Oak to Oskaloosa (Iowa) | 647.65 mi (1,042.29 km) |
| Red Oak to Oswego (Illinois) | 784.95 mi (1,263.25 km) |
| Red Oak to Oswego (New York) | 1,332.43 mi (2,144.34 km) |
| Red Oak to Otsego (Minnesota) | 896.69 mi (1,443.09 km) |
| Red Oak to Ottawa (Illinois) | 751.46 mi (1,209.36 km) |
| Red Oak to Ottawa (Kansas) | 428.59 mi (689.75 km) |
| Red Oak to Ottumwa (Iowa) | 634.76 mi (1,021.55 km) |
| Red Oak to Overland (Missouri) | 558.26 mi (898.43 km) |
| Red Oak to Overland Park (Kansas) | 455.30 mi (732.73 km) |
| Red Oak to Overlea (Maryland) | 1,224.95 mi (1,971.36 km) |
| Red Oak to Oviedo (Florida) | 964.39 mi (1,552.03 km) |
| Red Oak to Owasso (Oklahoma) | 265.88 mi (427.89 km) |
| Red Oak to Owatonna (Minnesota) | 822.10 mi (1,323.04 km) |
| Red Oak to Owensboro (Kentucky) | 654.69 mi (1,053.63 km) |
| Red Oak to Owings Mills (Maryland) | 1,211.88 mi (1,950.33 km) |
