| Fergus Falls to Orangevale (California) | 1,377.10 mi (2,216.23 km) |
| Fergus Falls to Orchards (Washington) | 1,264.78 mi (2,035.47 km) |
| Fergus Falls to Orcutt (California) | 1,492.25 mi (2,401.54 km) |
| Fergus Falls to Oregon (Ohio) | 704.41 mi (1,133.64 km) |
| Fergus Falls to Oregon (Wisconsin) | 402.38 mi (647.57 km) |
| Fergus Falls to Oregon City (Oregon) | 1,272.68 mi (2,048.17 km) |
| Fergus Falls to Orem (Utah) | 885.80 mi (1,425.55 km) |
| Fergus Falls to Orinda (California) | 1,450.45 mi (2,334.28 km) |
| Fergus Falls to Orland Park (Illinois) | 520.52 mi (837.69 km) |
| Fergus Falls to Orlando (Florida) | 1,467.24 mi (2,361.30 km) |
| Fergus Falls to Ormond Beach (Florida) | 1,425.05 mi (2,293.40 km) |
| Fergus Falls to Oro Valley (Arizona) | 1,241.23 mi (1,997.56 km) |
| Fergus Falls to Oroville (California) | 1,365.49 mi (2,197.55 km) |
| Fergus Falls to Oshkosh (Wisconsin) | 397.89 mi (640.34 km) |
| Fergus Falls to Oskaloosa (Iowa) | 385.11 mi (619.78 km) |
