| Buffalo Grove to Odessa (Texas) | 1,062.52 mi (1,709.97 km) |
| Buffalo Grove to Ogden (Utah) | 1,236.11 mi (1,989.33 km) |
| Buffalo Grove to Oildale (California) | 1,725.96 mi (2,777.66 km) |
| Buffalo Grove to Ojus (Florida) | 1,204.45 mi (1,938.38 km) |
| Buffalo Grove to Okemos (Michigan) | 184.69 mi (297.23 km) |
| Buffalo Grove to Oklahoma City (Oklahoma) | 691.08 mi (1,112.19 km) |
| Buffalo Grove to Okmulgee (Oklahoma) | 625.73 mi (1,007.02 km) |
| Buffalo Grove to Olathe (Kansas) | 425.51 mi (684.79 km) |
| Buffalo Grove to Old Jamestown (Missouri) | 260.31 mi (418.92 km) |
| Buffalo Grove to Oldsmar (Florida) | 1,019.65 mi (1,640.97 km) |
| Buffalo Grove to Olean (New York) | 488.12 mi (785.56 km) |
| Buffalo Grove to Olive Branch (Mississippi) | 508.19 mi (817.86 km) |
| Buffalo Grove to Olivehurst (California) | 1,763.17 mi (2,837.55 km) |
| Buffalo Grove to Olney (Maryland) | 607.23 mi (977.25 km) |
| Buffalo Grove to Olympia (Washington) | 1,736.10 mi (2,793.98 km) |
