| Fermo to Oswego (Illinois) | 4,840.21 mi (7,789.57 km) |
| Fermo to Oswego (New York) | 4,288.37 mi (6,901.46 km) |
| Fermo to Otsego (Minnesota) | 4,874.64 mi (7,844.97 km) |
| Fermo to Ottawa (Illinois) | 4,874.16 mi (7,844.21 km) |
| Fermo to Ottawa (Kansas) | 5,253.40 mi (8,454.53 km) |
| Fermo to Ottumwa (Iowa) | 5,028.72 mi (8,092.95 km) |
| Fermo to Overland (Missouri) | 5,057.26 mi (8,138.87 km) |
| Fermo to Overland Park (Kansas) | 5,217.32 mi (8,396.47 km) |
| Fermo to Overlea (Maryland) | 4,451.92 mi (7,164.67 km) |
| Fermo to Oviedo (Florida) | 5,122.32 mi (8,243.59 km) |
| Fermo to Owasso (Oklahoma) | 5,388.40 mi (8,671.80 km) |
| Fermo to Owatonna (Minnesota) | 4,915.32 mi (7,910.45 km) |
| Fermo to Owensboro (Kentucky) | 4,968.68 mi (7,996.31 km) |
| Fermo to Owings Mills (Maryland) | 4,461.81 mi (7,180.59 km) |
| Fermo to Owosso (Michigan) | 4,618.51 mi (7,432.77 km) |
