| Lombard to Oakley (California) | 1,792.66 mi (2,885.01 km) |
| Lombard to Oakton (Virginia) | 599.93 mi (965.49 km) |
| Lombard to Oakville (Missouri) | 266.14 mi (428.31 km) |
| Lombard to Oatfield (Oregon) | 1,732.49 mi (2,788.17 km) |
| Lombard to Ocala (Florida) | 936.54 mi (1,507.21 km) |
| Lombard to Ocean Acres (New Jersey) | 732.39 mi (1,178.66 km) |
| Lombard to Ocean City (New Jersey) | 725.81 mi (1,168.07 km) |
| Lombard to Ocean Pines (Maryland) | 720.35 mi (1,159.29 km) |
| Lombard to Ocean Pointe (Hawaii) | 4,237.65 mi (6,819.84 km) |
| Lombard to Ocean Springs (Mississippi) | 793.37 mi (1,276.81 km) |
| Lombard to Oceanside (California) | 1,702.13 mi (2,739.32 km) |
| Lombard to Oceanside (New York) | 750.93 mi (1,208.51 km) |
| Lombard to Ocoee (Florida) | 987.96 mi (1,589.97 km) |
| Lombard to Oconomowoc (Wisconsin) | 88.12 mi (141.82 km) |
| Lombard to Odenton (Maryland) | 625.36 mi (1,006.43 km) |
