| Guardiagrele to Orangevale (California) | 6,187.17 mi (9,957.28 km) |
| Guardiagrele to Orchards (Washington) | 5,806.95 mi (9,345.38 km) |
| Guardiagrele to Orcutt (California) | 6,388.83 mi (10,281.82 km) |
| Guardiagrele to Oregon (Ohio) | 4,706.23 mi (7,573.95 km) |
| Guardiagrele to Oregon (Wisconsin) | 4,887.62 mi (7,865.87 km) |
| Guardiagrele to Oregon City (Oregon) | 5,829.11 mi (9,381.05 km) |
| Guardiagrele to Orem (Utah) | 5,809.87 mi (9,350.08 km) |
| Guardiagrele to Orinda (California) | 6,261.74 mi (10,077.30 km) |
| Guardiagrele to Orland Park (Illinois) | 4,886.50 mi (7,864.07 km) |
| Guardiagrele to Orlando (Florida) | 5,188.37 mi (8,349.87 km) |
| Guardiagrele to Ormond Beach (Florida) | 5,140.89 mi (8,273.47 km) |
| Guardiagrele to Oro Valley (Arizona) | 6,219.48 mi (10,009.29 km) |
| Guardiagrele to Oroville (California) | 6,148.71 mi (9,895.40 km) |
| Guardiagrele to Oshkosh (Wisconsin) | 4,807.15 mi (7,736.35 km) |
| Guardiagrele to Oskaloosa (Iowa) | 5,087.25 mi (8,187.14 km) |
