| Kirkwood to Oswego (Illinois) | 241.07 mi (387.96 km) |
| Kirkwood to Oswego (New York) | 798.63 mi (1,285.28 km) |
| Kirkwood to Otsego (Minnesota) | 490.34 mi (789.13 km) |
| Kirkwood to Ottawa (Illinois) | 209.59 mi (337.31 km) |
| Kirkwood to Ottawa (Kansas) | 261.54 mi (420.91 km) |
| Kirkwood to Ottumwa (Iowa) | 199.21 mi (320.60 km) |
| Kirkwood to Overland (Missouri) | 8.60 mi (13.84 km) |
| Kirkwood to Overland Park (Kansas) | 230.93 mi (371.64 km) |
| Kirkwood to Overlea (Maryland) | 748.05 mi (1,203.86 km) |
| Kirkwood to Oviedo (Florida) | 866.17 mi (1,393.96 km) |
| Kirkwood to Owasso (Oklahoma) | 336.34 mi (541.29 km) |
| Kirkwood to Owatonna (Minnesota) | 407.76 mi (656.23 km) |
| Kirkwood to Owensboro (Kentucky) | 188.17 mi (302.84 km) |
| Kirkwood to Owings Mills (Maryland) | 733.42 mi (1,180.33 km) |
| Kirkwood to Owosso (Michigan) | 446.78 mi (719.03 km) |
