| Fergus Falls to Odessa (Texas) | 1,049.70 mi (1,689.32 km) |
| Fergus Falls to Ogden (Utah) | 864.68 mi (1,391.56 km) |
| Fergus Falls to Oildale (California) | 1,406.88 mi (2,264.15 km) |
| Fergus Falls to Ojus (Florida) | 1,654.83 mi (2,663.20 km) |
| Fergus Falls to Okemos (Michigan) | 624.95 mi (1,005.75 km) |
| Fergus Falls to Oklahoma City (Oklahoma) | 751.17 mi (1,208.88 km) |
| Fergus Falls to Okmulgee (Oklahoma) | 737.37 mi (1,186.69 km) |
| Fergus Falls to Olathe (Kansas) | 515.39 mi (829.44 km) |
| Fergus Falls to Old Jamestown (Missouri) | 592.51 mi (953.55 km) |
| Fergus Falls to Oldsmar (Florida) | 1,455.56 mi (2,342.49 km) |
| Fergus Falls to Olean (New York) | 918.87 mi (1,478.78 km) |
| Fergus Falls to Olive Branch (Mississippi) | 847.21 mi (1,363.45 km) |
| Fergus Falls to Olivehurst (California) | 1,379.23 mi (2,219.65 km) |
| Fergus Falls to Olney (Maryland) | 1,079.72 mi (1,737.65 km) |
| Fergus Falls to Olympia (Washington) | 1,266.58 mi (2,038.37 km) |
