| Formia to Orangevale (California) | 6,223.96 mi (10,016.50 km) |
| Formia to Orchards (Washington) | 5,848.43 mi (9,412.13 km) |
| Formia to Orcutt (California) | 6,422.84 mi (10,336.56 km) |
| Formia to Oregon (Ohio) | 4,720.41 mi (7,596.76 km) |
| Formia to Oregon (Wisconsin) | 4,906.63 mi (7,896.46 km) |
| Formia to Oregon City (Oregon) | 5,870.44 mi (9,447.56 km) |
| Formia to Orem (Utah) | 5,841.03 mi (9,400.23 km) |
| Formia to Orinda (California) | 6,298.78 mi (10,136.90 km) |
| Formia to Orland Park (Illinois) | 4,903.29 mi (7,891.09 km) |
| Formia to Orlando (Florida) | 5,187.67 mi (8,348.74 km) |
| Formia to Ormond Beach (Florida) | 5,140.84 mi (8,273.38 km) |
| Formia to Oro Valley (Arizona) | 6,244.59 mi (10,049.70 km) |
| Formia to Oroville (California) | 6,186.21 mi (9,955.74 km) |
| Formia to Oshkosh (Wisconsin) | 4,826.75 mi (7,767.91 km) |
| Formia to Oskaloosa (Iowa) | 5,106.69 mi (8,218.43 km) |
