| Fergus Falls to Orbetello | 4,861.09 mi (7,823.17 km) |
| Fergus Falls to Oria | 5,184.87 mi (8,344.24 km) |
| Fergus Falls to Oristano | 4,889.32 mi (7,868.59 km) |
| Fergus Falls to Orta Nova | 5,075.41 mi (8,168.08 km) |
| Fergus Falls to Orte | 4,901.76 mi (7,888.62 km) |
| Fergus Falls to Ortona | 4,977.89 mi (8,011.14 km) |
| Fergus Falls to Orvieto | 4,879.19 mi (7,852.30 km) |
| Fergus Falls to Orzinuovi | 4,671.77 mi (7,518.48 km) |
| Fergus Falls to Osimo | 4,889.07 mi (7,868.20 km) |
| Fergus Falls to Ospitaletto | 4,669.17 mi (7,514.30 km) |
| Fergus Falls to Ostuni | 5,170.97 mi (8,321.88 km) |
| Fergus Falls to Ottaviano | 5,056.76 mi (8,138.08 km) |
| Fergus Falls to Ovada | 4,662.88 mi (7,504.17 km) |
| Fergus Falls to Ozieri | 4,871.55 mi (7,840.00 km) |
| Fergus Falls to Paceco | 5,132.56 mi (8,260.05 km) |
