| Rolling Meadows to Oskaloosa (Iowa) | 244.17 mi (392.96 km) |
| Rolling Meadows to Oswego (Illinois) | 31.44 mi (50.60 km) |
| Rolling Meadows to Oswego (New York) | 591.79 mi (952.40 km) |
| Rolling Meadows to Otsego (Minnesota) | 355.95 mi (572.84 km) |
| Rolling Meadows to Ottawa (Illinois) | 64.62 mi (103.99 km) |
| Rolling Meadows to Ottawa (Kansas) | 450.29 mi (724.67 km) |
| Rolling Meadows to Ottumwa (Iowa) | 238.56 mi (383.93 km) |
| Rolling Meadows to Overland (Missouri) | 263.96 mi (424.81 km) |
| Rolling Meadows to Overland Park (Kansas) | 413.43 mi (665.35 km) |
| Rolling Meadows to Overlea (Maryland) | 630.46 mi (1,014.63 km) |
| Rolling Meadows to Oviedo (Florida) | 1,003.00 mi (1,614.17 km) |
| Rolling Meadows to Owasso (Oklahoma) | 578.01 mi (930.22 km) |
| Rolling Meadows to Owatonna (Minnesota) | 297.29 mi (478.44 km) |
| Rolling Meadows to Owensboro (Kentucky) | 302.14 mi (486.25 km) |
| Rolling Meadows to Owings Mills (Maryland) | 615.64 mi (990.78 km) |
