| Grammichele to Orangevale (California) | 6,487.91 mi (10,441.28 km) |
| Grammichele to Orchards (Washington) | 6,120.17 mi (9,849.47 km) |
| Grammichele to Orcutt (California) | 6,681.53 mi (10,752.89 km) |
| Grammichele to Oregon (Ohio) | 4,935.43 mi (7,942.81 km) |
| Grammichele to Oregon (Wisconsin) | 5,133.75 mi (8,261.98 km) |
| Grammichele to Oregon City (Oregon) | 6,141.97 mi (9,884.54 km) |
| Grammichele to Orem (Utah) | 6,094.55 mi (9,808.24 km) |
| Grammichele to Orinda (California) | 6,563.09 mi (10,562.28 km) |
| Grammichele to Orland Park (Illinois) | 5,124.83 mi (8,247.62 km) |
| Grammichele to Orlando (Florida) | 5,358.43 mi (8,623.55 km) |
| Grammichele to Ormond Beach (Florida) | 5,313.76 mi (8,551.67 km) |
| Grammichele to Oro Valley (Arizona) | 6,484.63 mi (10,436.00 km) |
| Grammichele to Oroville (California) | 6,451.39 mi (10,382.51 km) |
| Grammichele to Oshkosh (Wisconsin) | 5,055.46 mi (8,135.98 km) |
| Grammichele to Oskaloosa (Iowa) | 5,334.59 mi (8,585.19 km) |
