| Kirkwood to Oakley (California) | 1,688.39 mi (2,717.19 km) |
| Kirkwood to Oakton (Virginia) | 706.77 mi (1,137.44 km) |
| Kirkwood to Oakville (Missouri) | 10.55 mi (16.98 km) |
| Kirkwood to Oatfield (Oregon) | 1,705.52 mi (2,744.77 km) |
| Kirkwood to Ocala (Florida) | 803.48 mi (1,293.08 km) |
| Kirkwood to Ocean Acres (New Jersey) | 867.21 mi (1,395.64 km) |
| Kirkwood to Ocean City (New Jersey) | 850.54 mi (1,368.81 km) |
| Kirkwood to Ocean Pines (Maryland) | 825.14 mi (1,327.94 km) |
| Kirkwood to Ocean Pointe (Hawaii) | 4,126.87 mi (6,641.56 km) |
| Kirkwood to Ocean Springs (Mississippi) | 572.12 mi (920.74 km) |
| Kirkwood to Oceanside (California) | 1,543.60 mi (2,484.18 km) |
| Kirkwood to Oceanside (New York) | 903.22 mi (1,453.60 km) |
| Kirkwood to Ocoee (Florida) | 858.67 mi (1,381.89 km) |
| Kirkwood to Oconomowoc (Wisconsin) | 328.15 mi (528.10 km) |
| Kirkwood to Odenton (Maryland) | 738.96 mi (1,189.25 km) |
