| Grosseto to Orangevale (California) | 6,065.44 mi (9,761.38 km) |
| Grosseto to Orchards (Washington) | 5,694.22 mi (9,163.96 km) |
| Grosseto to Orcutt (California) | 6,262.30 mi (10,078.19 km) |
| Grosseto to Oregon (Ohio) | 4,554.96 mi (7,330.50 km) |
| Grosseto to Oregon (Wisconsin) | 4,741.08 mi (7,630.02 km) |
| Grosseto to Oregon City (Oregon) | 5,716.08 mi (9,199.15 km) |
| Grosseto to Orem (Utah) | 5,678.89 mi (9,139.29 km) |
| Grosseto to Orinda (California) | 6,140.42 mi (9,882.06 km) |
| Grosseto to Orland Park (Illinois) | 4,737.69 mi (7,624.57 km) |
| Grosseto to Orlando (Florida) | 5,027.45 mi (8,090.89 km) |
| Grosseto to Ormond Beach (Florida) | 4,980.24 mi (8,014.92 km) |
| Grosseto to Oro Valley (Arizona) | 6,080.02 mi (9,784.84 km) |
| Grosseto to Oroville (California) | 6,028.25 mi (9,701.52 km) |
| Grosseto to Oshkosh (Wisconsin) | 4,661.24 mi (7,501.54 km) |
| Grosseto to Oskaloosa (Iowa) | 4,941.16 mi (7,952.04 km) |
