| Fergus Falls to Octeville | 4,071.81 mi (6,552.94 km) |
| Fergus Falls to Oignies | 4,199.60 mi (6,758.60 km) |
| Fergus Falls to Oissel | 4,181.43 mi (6,729.37 km) |
| Fergus Falls to Olivet | 4,274.00 mi (6,878.34 km) |
| Fergus Falls to Ollioules | 4,632.18 mi (7,454.78 km) |
| Fergus Falls to Olonne-sur-Mer | 4,195.98 mi (6,752.77 km) |
| Fergus Falls to Oloron-Sainte-Marie | 4,385.14 mi (7,057.21 km) |
| Fergus Falls to Onet Village | 4,454.67 mi (7,169.10 km) |
| Fergus Falls to Onnaing | 4,223.87 mi (6,797.66 km) |
| Fergus Falls to Orange | 4,547.36 mi (7,318.27 km) |
| Fergus Falls to Orchies | 4,207.97 mi (6,772.07 km) |
| Fergus Falls to Orleans | 4,272.62 mi (6,876.12 km) |
| Fergus Falls to Orly | 4,253.28 mi (6,844.99 km) |
| Fergus Falls to Ormesson-sur-Marne | 4,256.61 mi (6,850.34 km) |
| Fergus Falls to Orsay | 4,247.99 mi (6,836.48 km) |
