| Grosseto to Oswego (Illinois) | 4,753.48 mi (7,649.99 km) |
| Grosseto to Oswego (New York) | 4,194.34 mi (6,750.14 km) |
| Grosseto to Otsego (Minnesota) | 4,798.34 mi (7,722.18 km) |
| Grosseto to Ottawa (Illinois) | 4,787.40 mi (7,704.58 km) |
| Grosseto to Ottawa (Kansas) | 5,169.04 mi (8,318.76 km) |
| Grosseto to Ottumwa (Iowa) | 4,944.90 mi (7,958.05 km) |
| Grosseto to Overland (Missouri) | 4,968.16 mi (7,995.48 km) |
| Grosseto to Overland Park (Kansas) | 5,132.77 mi (8,260.39 km) |
| Grosseto to Overlea (Maryland) | 4,351.69 mi (7,003.37 km) |
| Grosseto to Oviedo (Florida) | 5,012.47 mi (8,066.79 km) |
| Grosseto to Owasso (Oklahoma) | 5,301.53 mi (8,531.98 km) |
| Grosseto to Owatonna (Minnesota) | 4,836.84 mi (7,784.15 km) |
| Grosseto to Owensboro (Kentucky) | 4,875.22 mi (7,845.91 km) |
| Grosseto to Owings Mills (Maryland) | 4,361.86 mi (7,019.74 km) |
| Grosseto to Owosso (Michigan) | 4,530.04 mi (7,290.40 km) |
