| Fergus Falls to Nuth | 4,277.95 mi (6,884.69 km) |
| Fergus Falls to Oegstgeest | 4,175.42 mi (6,719.69 km) |
| Fergus Falls to Oirschot | 4,232.78 mi (6,812.00 km) |
| Fergus Falls to Oisterwijk | 4,225.81 mi (6,800.78 km) |
| Fergus Falls to Oldebroek | 4,210.88 mi (6,776.75 km) |
| Fergus Falls to Oldenzaal | 4,250.30 mi (6,840.20 km) |
| Fergus Falls to Ommen | 4,224.73 mi (6,799.05 km) |
| Fergus Falls to Oosterend | 4,192.06 mi (6,746.46 km) |
| Fergus Falls to Oosterhout | 4,211.79 mi (6,778.22 km) |
| Fergus Falls to Oosterwolde | 4,199.88 mi (6,759.06 km) |
| Fergus Falls to Oostzaan | 4,178.35 mi (6,724.41 km) |
| Fergus Falls to Opmeer | 4,169.01 mi (6,709.38 km) |
| Fergus Falls to Oss | 4,228.26 mi (6,804.73 km) |
| Fergus Falls to Oud-Beijerland | 4,189.04 mi (6,741.61 km) |
| Fergus Falls to Oudenbosch | 4,203.03 mi (6,764.13 km) |
