| Ospitaletto to Oswego (Illinois) | 4,596.72 mi (7,397.70 km) |
| Ospitaletto to Oswego (New York) | 4,047.17 mi (6,513.29 km) |
| Ospitaletto to Otsego (Minnesota) | 4,630.26 mi (7,451.69 km) |
| Ospitaletto to Ottawa (Illinois) | 4,630.67 mi (7,452.34 km) |
| Ospitaletto to Ottawa (Kansas) | 5,009.46 mi (8,061.95 km) |
| Ospitaletto to Ottumwa (Iowa) | 4,784.73 mi (7,700.27 km) |
| Ospitaletto to Overland (Missouri) | 4,814.29 mi (7,747.85 km) |
| Ospitaletto to Overland Park (Kansas) | 4,973.41 mi (8,003.94 km) |
| Ospitaletto to Overlea (Maryland) | 4,213.83 mi (6,781.51 km) |
| Ospitaletto to Oviedo (Florida) | 4,891.80 mi (7,872.59 km) |
| Ospitaletto to Owasso (Oklahoma) | 5,144.89 mi (8,279.89 km) |
| Ospitaletto to Owatonna (Minnesota) | 4,670.94 mi (7,517.15 km) |
| Ospitaletto to Owensboro (Kentucky) | 4,727.11 mi (7,607.56 km) |
| Ospitaletto to Owings Mills (Maryland) | 4,223.55 mi (6,797.14 km) |
| Ospitaletto to Owosso (Michigan) | 4,375.43 mi (7,041.57 km) |
