| Forney to Odessa (Texas) | 349.14 mi (561.89 km) |
| Forney to Ogden (Utah) | 1,035.18 mi (1,665.96 km) |
| Forney to Oildale (California) | 1,302.30 mi (2,095.85 km) |
| Forney to Ojus (Florida) | 1,085.78 mi (1,747.40 km) |
| Forney to Okemos (Michigan) | 950.26 mi (1,529.29 km) |
| Forney to Oklahoma City (Oklahoma) | 197.72 mi (318.20 km) |
| Forney to Okmulgee (Oklahoma) | 199.89 mi (321.69 km) |
| Forney to Olathe (Kansas) | 433.92 mi (698.32 km) |
| Forney to Old Jamestown (Missouri) | 544.56 mi (876.39 km) |
| Forney to Oldsmar (Florida) | 882.20 mi (1,419.76 km) |
| Forney to Olean (New York) | 1,177.01 mi (1,894.22 km) |
| Forney to Olive Branch (Mississippi) | 408.72 mi (657.78 km) |
| Forney to Olivehurst (California) | 1,465.93 mi (2,359.18 km) |
| Forney to Olney (Maryland) | 1,167.89 mi (1,879.54 km) |
| Forney to Olympia (Washington) | 1,701.38 mi (2,738.11 km) |
