| Kirkwood to Orangevale (California) | 1,654.48 mi (2,662.62 km) |
| Kirkwood to Orchards (Washington) | 1,704.10 mi (2,742.49 km) |
| Kirkwood to Orcutt (California) | 1,673.57 mi (2,693.35 km) |
| Kirkwood to Oregon (Ohio) | 425.76 mi (685.19 km) |
| Kirkwood to Oregon (Wisconsin) | 305.12 mi (491.04 km) |
| Kirkwood to Oregon City (Oregon) | 1,705.06 mi (2,744.02 km) |
| Kirkwood to Orem (Utah) | 1,138.91 mi (1,832.90 km) |
| Kirkwood to Orinda (California) | 1,715.76 mi (2,761.25 km) |
| Kirkwood to Orland Park (Illinois) | 249.12 mi (400.93 km) |
| Kirkwood to Orlando (Florida) | 871.22 mi (1,402.09 km) |
| Kirkwood to Ormond Beach (Florida) | 833.56 mi (1,341.49 km) |
| Kirkwood to Oro Valley (Arizona) | 1,228.79 mi (1,977.55 km) |
| Kirkwood to Oroville (California) | 1,664.18 mi (2,678.24 km) |
| Kirkwood to Oshkosh (Wisconsin) | 388.28 mi (624.87 km) |
| Kirkwood to Oskaloosa (Iowa) | 221.30 mi (356.15 km) |
