| Oak Lawn to Olympia Heights (Florida) | 1,182.91 mi (1,903.71 km) |
| Oak Lawn to Omaha (Nebraska) | 430.55 mi (692.91 km) |
| Oak Lawn to On Top of the World Designated Place (Florida) | 923.38 mi (1,486.04 km) |
| Oak Lawn to Onalaska (Wisconsin) | 230.71 mi (371.29 km) |
| Oak Lawn to Oneida (New York) | 623.52 mi (1,003.45 km) |
| Oak Lawn to Oneonta (New York) | 651.92 mi (1,049.17 km) |
| Oak Lawn to Ontario (California) | 1,702.34 mi (2,739.64 km) |
| Oak Lawn to Ontario (Oregon) | 1,480.58 mi (2,382.77 km) |
| Oak Lawn to Opa-locka (Florida) | 1,173.17 mi (1,888.04 km) |
| Oak Lawn to Opelika (Alabama) | 638.93 mi (1,028.26 km) |
| Oak Lawn to Opelousas (Louisiana) | 809.63 mi (1,302.98 km) |
| Oak Lawn to Orange (California) | 1,720.75 mi (2,769.28 km) |
| Oak Lawn to Orange (Texas) | 867.98 mi (1,396.88 km) |
| Oak Lawn to Orange City (Florida) | 954.45 mi (1,536.04 km) |
| Oak Lawn to Orangeburg (South Carolina) | 681.16 mi (1,096.22 km) |
