| Forest to Orangevale (California) | 5,430.27 mi (8,739.18 km) |
| Forest to Orchards (Washington) | 5,054.11 mi (8,133.81 km) |
| Forest to Orcutt (California) | 5,631.73 mi (9,063.40 km) |
| Forest to Oregon (Ohio) | 3,990.16 mi (6,421.53 km) |
| Forest to Oregon (Wisconsin) | 4,155.19 mi (6,687.13 km) |
| Forest to Oregon City (Oregon) | 5,076.07 mi (8,169.14 km) |
| Forest to Orem (Utah) | 5,054.19 mi (8,133.93 km) |
| Forest to Orinda (California) | 5,504.94 mi (8,859.35 km) |
| Forest to Orland Park (Illinois) | 4,160.88 mi (6,696.30 km) |
| Forest to Orlando (Florida) | 4,539.13 mi (7,305.02 km) |
| Forest to Ormond Beach (Florida) | 4,488.35 mi (7,223.31 km) |
| Forest to Oro Valley (Arizona) | 5,471.31 mi (8,805.22 km) |
| Forest to Oroville (California) | 5,392.12 mi (8,677.77 km) |
| Forest to Oshkosh (Wisconsin) | 4,073.16 mi (6,555.11 km) |
| Forest to Oskaloosa (Iowa) | 4,353.23 mi (7,005.85 km) |
