| Prato to Orangevale (California) | 6,002.51 mi (9,660.11 km) |
| Prato to Orchards (Washington) | 5,627.95 mi (9,057.31 km) |
| Prato to Orcutt (California) | 6,201.45 mi (9,980.27 km) |
| Prato to Oregon (Ohio) | 4,510.53 mi (7,258.99 km) |
| Prato to Oregon (Wisconsin) | 4,692.31 mi (7,551.54 km) |
| Prato to Oregon City (Oregon) | 5,649.92 mi (9,092.66 km) |
| Prato to Orem (Utah) | 5,620.14 mi (9,044.74 km) |
| Prato to Orinda (California) | 6,077.34 mi (9,780.53 km) |
| Prato to Orland Park (Illinois) | 4,690.89 mi (7,549.26 km) |
| Prato to Orlando (Florida) | 4,997.23 mi (8,042.26 km) |
| Prato to Ormond Beach (Florida) | 4,949.38 mi (7,965.26 km) |
| Prato to Oro Valley (Arizona) | 6,026.15 mi (9,698.15 km) |
| Prato to Oroville (California) | 5,964.81 mi (9,599.44 km) |
| Prato to Oshkosh (Wisconsin) | 4,611.95 mi (7,422.21 km) |
| Prato to Oskaloosa (Iowa) | 4,892.03 mi (7,872.96 km) |
