| Forfar to Odessa (Texas) | 4,741.68 mi (7,631.00 km) |
| Forfar to Ogden (Utah) | 4,522.91 mi (7,278.92 km) |
| Forfar to Oildale (California) | 5,066.83 mi (8,154.28 km) |
| Forfar to Ojus (Florida) | 4,261.17 mi (6,857.70 km) |
| Forfar to Okemos (Michigan) | 3,540.36 mi (5,697.66 km) |
| Forfar to Oklahoma City (Oklahoma) | 4,377.01 mi (7,044.12 km) |
| Forfar to Okmulgee (Oklahoma) | 4,316.88 mi (6,947.35 km) |
| Forfar to Olathe (Kansas) | 4,100.17 mi (6,598.59 km) |
| Forfar to Old Jamestown (Missouri) | 3,944.69 mi (6,348.37 km) |
| Forfar to Oldsmar (Florida) | 4,241.51 mi (6,826.05 km) |
| Forfar to Olean (New York) | 3,356.06 mi (5,401.06 km) |
| Forfar to Olive Branch (Mississippi) | 4,134.00 mi (6,653.02 km) |
| Forfar to Olivehurst (California) | 4,921.43 mi (7,920.27 km) |
| Forfar to Olney (Maryland) | 3,450.79 mi (5,553.50 km) |
| Forfar to Olympia (Washington) | 4,485.45 mi (7,218.63 km) |
