| Lombard to Odessa (Texas) | 1,048.12 mi (1,686.78 km) |
| Lombard to Ogden (Utah) | 1,235.30 mi (1,988.02 km) |
| Lombard to Oildale (California) | 1,721.42 mi (2,770.36 km) |
| Lombard to Ojus (Florida) | 1,187.12 mi (1,910.49 km) |
| Lombard to Okemos (Michigan) | 192.85 mi (310.37 km) |
| Lombard to Oklahoma City (Oklahoma) | 676.32 mi (1,088.44 km) |
| Lombard to Okmulgee (Oklahoma) | 609.84 mi (981.45 km) |
| Lombard to Olathe (Kansas) | 413.29 mi (665.12 km) |
| Lombard to Old Jamestown (Missouri) | 241.30 mi (388.33 km) |
| Lombard to Oldsmar (Florida) | 1,001.37 mi (1,611.55 km) |
| Lombard to Olean (New York) | 492.20 mi (792.13 km) |
| Lombard to Olive Branch (Mississippi) | 487.79 mi (785.02 km) |
| Lombard to Olivehurst (California) | 1,762.06 mi (2,835.77 km) |
| Lombard to Olney (Maryland) | 604.49 mi (972.84 km) |
| Lombard to Olympia (Washington) | 1,741.63 mi (2,802.88 km) |
