| Forest to Odessa (Texas) | 5,195.79 mi (8,361.82 km) |
| Forest to Ogden (Utah) | 5,010.84 mi (8,064.16 km) |
| Forest to Oildale (California) | 5,557.24 mi (8,943.51 km) |
| Forest to Ojus (Florida) | 4,615.86 mi (7,428.52 km) |
| Forest to Okemos (Michigan) | 3,979.36 mi (6,404.16 km) |
| Forest to Oklahoma City (Oklahoma) | 4,827.48 mi (7,769.08 km) |
| Forest to Okmulgee (Oklahoma) | 4,763.82 mi (7,666.63 km) |
| Forest to Olathe (Kansas) | 4,553.02 mi (7,327.38 km) |
| Forest to Old Jamestown (Missouri) | 4,385.92 mi (7,058.45 km) |
| Forest to Oldsmar (Florida) | 4,616.37 mi (7,429.33 km) |
| Forest to Olean (New York) | 3,775.88 mi (6,076.68 km) |
| Forest to Olive Branch (Mississippi) | 4,561.31 mi (7,340.71 km) |
| Forest to Olivehurst (California) | 5,416.68 mi (8,717.31 km) |
| Forest to Olney (Maryland) | 3,852.81 mi (6,200.50 km) |
| Forest to Olympia (Washington) | 4,983.97 mi (8,020.92 km) |
